402696217 has 16 divisors (see below), whose sum is σ = 503424000. Its totient is φ = 312938640.

The previous prime is 402696157. The next prime is 402696223. The reversal of 402696217 is 712696204.

It is a de Polignac number, because none of the positive numbers 2^k-402696217 is a prime.

It is a super-2 number, since 2×402696217² = 324328486372222178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402696257) 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, 22284 + ... + 36082.

It is an arithmetic number, because the mean of its divisors is an integer number (31464000).

Almost surely, 2^402696217 is an apocalyptic number.

It is an amenable number.

402696217 is a deficient number, since it is larger than the sum of its proper divisors (100727783).

402696217 is a wasteful number, since it uses less digits than its factorization.

402696217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14196.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 402696217 is about 20067.2922189318. The cubic root of 402696217 is about 738.4580853507.

The spelling of 402696217 in words is "four hundred two million, six hundred ninety-six thousand, two hundred seventeen".