402641716 has 6 divisors (see below), whose sum is σ = 704623010. Its totient is φ = 201320856.

The previous prime is 402641699. The next prime is 402641737. The reversal of 402641716 is 617146204.

It can be written as a sum of positive squares in only one way, i.e., 347822500 + 54819216 = 18650^2 + 7404^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50330211 + ... + 50330218.

Almost surely, 2^402641716 is an apocalyptic number.

It is an amenable number.

402641716 is a deficient number, since it is larger than the sum of its proper divisors (301981294).

402641716 is a wasteful number, since it uses less digits than its factorization.

402641716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100660433 (or 100660431 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 402641716 is about 20065.9342169758. The cubic root of 402641716 is about 738.4247694845.

The spelling of 402641716 in words is "four hundred two million, six hundred forty-one thousand, seven hundred sixteen".