402881629 has 2 divisors, whose sum is σ = 402881630. Its totient is φ = 402881628.

The previous prime is 402881617. The next prime is 402881651. The reversal of 402881629 is 926188204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402804900 + 76729 = 20070^2 + 277^2 .

It is a cyclic number.

It is not a de Polignac number, because 402881629 - 2¹³ = 402873437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402881591 and 402881600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402881029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201440814 + 201440815.

It is an arithmetic number, because the mean of its divisors is an integer number (201440815).

Almost surely, 2^402881629 is an apocalyptic number.

It is an amenable number.

402881629 is a deficient number, since it is larger than the sum of its proper divisors (1).

402881629 is an equidigital number, since it uses as much as digits as its factorization.

402881629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 402881629 is about 20071.9114436070. The cubic root of 402881629 is about 738.5714031789.

The spelling of 402881629 in words is "four hundred two million, eight hundred eighty-one thousand, six hundred twenty-nine".