402881651 has 2 divisors, whose sum is σ = 402881652. Its totient is φ = 402881650.

The previous prime is 402881629. The next prime is 402881683. The reversal of 402881651 is 156188204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402881651 - 2⁶ = 402881587 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402881851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201440825 + 201440826.

It is an arithmetic number, because the mean of its divisors is an integer number (201440826).

Almost surely, 2^402881651 is an apocalyptic number.

402881651 is a deficient number, since it is larger than the sum of its proper divisors (1).

402881651 is an equidigital number, since it uses as much as digits as its factorization.

402881651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 402881651 is about 20071.9119916365. The cubic root of 402881651 is about 738.5714166225.

The spelling of 402881651 in words is "four hundred two million, eight hundred eighty-one thousand, six hundred fifty-one".