1400464621 has 2 divisors, whose sum is σ = 1400464622. Its totient is φ = 1400464620.

The previous prime is 1400464613. The next prime is 1400464691. The reversal of 1400464621 is 1264640041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1309643721 + 90820900 = 36189^2 + 9530^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400464621 - 2³ = 1400464613 is a prime.

It is a super-2 number, since 2×1400464621² = 3922602309345347282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1400464621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1400464691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700232310 + 700232311.

It is an arithmetic number, because the mean of its divisors is an integer number (700232311).

Almost surely, 2^1400464621 is an apocalyptic number.

It is an amenable number.

1400464621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400464621 is an equidigital number, since it uses as much as digits as its factorization.

1400464621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 1400464621 is about 37422.7821119702. The cubic root of 1400464621 is about 1118.8126822926.

The spelling of 1400464621 in words is "one billion, four hundred million, four hundred sixty-four thousand, six hundred twenty-one".