402117954 has 32 divisors (see below), whose sum is σ = 919818240. Its totient is φ = 114804432.

The previous prime is 402117929. The next prime is 402117959. The reversal of 402117954 is 459711204.

It is a happy number.

It is a super-2 number, since 2×402117954² = 323397697858292232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402117959) 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, 71157 + ... + 76599.

It is an arithmetic number, because the mean of its divisors is an integer number (28744320).

Almost surely, 2^402117954 is an apocalyptic number.

402117954 is an abundant number, since it is smaller than the sum of its proper divisors (517700286).

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

402117954 is a wasteful number, since it uses less digits than its factorization.

402117954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7214.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 402117954 is about 20052.8789454283. The cubic root of 402117954 is about 738.1044461130.

The spelling of 402117954 in words is "four hundred two million, one hundred seventeen thousand, nine hundred fifty-four".