402964289 has 16 divisors (see below), whose sum is σ = 506083200. Its totient is φ = 318825360.

The previous prime is 402964283. The next prime is 402964327. The reversal of 402964289 is 982469204.

It is a happy number.

It is not a de Polignac number, because 402964289 - 2¹² = 402960193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402964283) 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, 40727 + ... + 49644.

It is an arithmetic number, because the mean of its divisors is an integer number (31630200).

Almost surely, 2^402964289 is an apocalyptic number.

402964289 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

402964289 is a deficient number, since it is larger than the sum of its proper divisors (103118911).

402964289 is an equidigital number, since it uses as much as digits as its factorization.

402964289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90405 (or 90391 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 402964289 is about 20073.9704343710. The cubic root of 402964289 is about 738.6219110974.

The spelling of 402964289 in words is "four hundred two million, nine hundred sixty-four thousand, two hundred eighty-nine".