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399469663 = 6119333931
BaseRepresentation
bin10111110011110…
…110110001011111
31000211200011100201
4113303312301133
51304231012123
6103350004331
712620302405
oct2763666137
91024604321
10399469663
1119554351a
12b19466a7
13649b70a8
143b0a7475
152510b5ad
hex17cf6c5f

399469663 has 8 divisors (see below), whose sum is σ = 408134096. Its totient is φ = 390873600.

The previous prime is 399469633. The next prime is 399469691. The reversal of 399469663 is 366964993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 399469663 - 29 = 399469151 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 (399469633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5193 + ... + 28738.

It is an arithmetic number, because the mean of its divisors is an integer number (51016762).

Almost surely, 2399469663 is an apocalyptic number.

399469663 is a deficient number, since it is larger than the sum of its proper divisors (8664433).

399469663 is a wasteful number, since it uses less digits than its factorization.

399469663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34185.

The product of its digits is 5668704, while the sum is 55.

The square root of 399469663 is about 19986.7371774384. The cubic root of 399469663 is about 736.4805260086.

The spelling of 399469663 in words is "three hundred ninety-nine million, four hundred sixty-nine thousand, six hundred sixty-three".

Divisors: 1 61 193 11773 33931 2069791 6548683 399469663