401662013 has 2 divisors, whose sum is σ = 401662014. Its totient is φ = 401662012.

The previous prime is 401662007. The next prime is 401662039. The reversal of 401662013 is 310266104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383454724 + 18207289 = 19582^2 + 4267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401662013 is a prime.

It is a super-2 number, since 2×401662013² = 322664745374424338, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 401662013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401668013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200831006 + 200831007.

It is an arithmetic number, because the mean of its divisors is an integer number (200831007).

Almost surely, 2^401662013 is an apocalyptic number.

It is an amenable number.

401662013 is a deficient number, since it is larger than the sum of its proper divisors (1).

401662013 is an equidigital number, since it uses as much as digits as its factorization.

401662013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 401662013 is about 20041.5072536973. The cubic root of 401662013 is about 737.8253743065.

The spelling of 401662013 in words is "four hundred one million, six hundred sixty-two thousand, thirteen".