402492923 has 16 divisors (see below), whose sum is σ = 463927296. Its totient is φ = 342057600.

The previous prime is 402492907. The next prime is 402492929. The reversal of 402492923 is 329294204.

It is a cyclic number.

It is not a de Polignac number, because 402492923 - 2⁴ = 402492907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402492929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 625640 + ... + 626282.

It is an arithmetic number, because the mean of its divisors is an integer number (28995456).

Almost surely, 2^402492923 is an apocalyptic number.

402492923 is a deficient number, since it is larger than the sum of its proper divisors (61434373).

402492923 is a wasteful number, since it uses less digits than its factorization.

402492923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 402492923 is about 20062.2262722760. The cubic root of 402492923 is about 738.3337986376. Note that the first 3 decimals are identical.

The spelling of 402492923 in words is "four hundred two million, four hundred ninety-two thousand, nine hundred twenty-three".