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394849902 = 23107615031
BaseRepresentation
bin10111100010001…
…110111001101110
31000111222110020110
4113202032321232
51302040144102
6103103000450
712533111616
oct2742167156
91014873213
10394849902
11192978637
12b0299126
1363a5a3c5
143a623a46
15249e786c
hex1788ee6e

394849902 has 16 divisors (see below), whose sum is σ = 797081472. Its totient is φ = 130386360.

The previous prime is 394849831. The next prime is 394849913. The reversal of 394849902 is 209948493.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306874 + ... + 308157.

It is an arithmetic number, because the mean of its divisors is an integer number (49817592).

Almost surely, 2394849902 is an apocalyptic number.

394849902 is an abundant number, since it is smaller than the sum of its proper divisors (402231570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394849902 is a wasteful number, since it uses less digits than its factorization.

394849902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615143.

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 394849902 is about 19870.8304305583. The cubic root of 394849902 is about 733.6304432919.

The spelling of 394849902 in words is "three hundred ninety-four million, eight hundred forty-nine thousand, nine hundred two".

Divisors: 1 2 3 6 107 214 321 642 615031 1230062 1845093 3690186 65808317 131616634 197424951 394849902