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396049213 = 7223477477
BaseRepresentation
bin10111100110110…
…011101100111101
31000121020101101101
4113212303230331
51302342033323
6103144413101
712546235300
oct2746635475
91017211341
10396049213
111936176aa
12b0777191
136408a261
143a856b37
1524b82dad
hex179b3b3d

396049213 has 24 divisors (see below), whose sum is σ = 491035392. Its totient is φ = 317759904.

The previous prime is 396049189. The next prime is 396049219. The reversal of 396049213 is 312940693.

It is a de Polignac number, because none of the positive numbers 2k-396049213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396049219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49231 + ... + 56707.

It is an arithmetic number, because the mean of its divisors is an integer number (20459808).

Almost surely, 2396049213 is an apocalyptic number.

It is an amenable number.

396049213 is a deficient number, since it is larger than the sum of its proper divisors (94986179).

396049213 is a wasteful number, since it uses less digits than its factorization.

396049213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7561 (or 7554 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 396049213 is about 19900.9852268675. The cubic root of 396049213 is about 734.3724651260.

The spelling of 396049213 in words is "three hundred ninety-six million, forty-nine thousand, two hundred thirteen".

Divisors: 1 7 23 47 49 161 329 1081 1127 2303 7477 7567 52339 52969 171971 351419 366373 1203797 2459933 8082637 8426579 17219531 56578459 396049213