803949631 has 2 divisors, whose sum is σ = 803949632. Its totient is φ = 803949630.

The previous prime is 803949593. The next prime is 803949637. The reversal of 803949631 is 136949308.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 803949631 - 2²³ = 795561023 is a prime.

It is a super-2 number, since 2×803949631² = 1292670018370072322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (803949637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401974815 + 401974816.

It is an arithmetic number, because the mean of its divisors is an integer number (401974816).

Almost surely, 2^803949631 is an apocalyptic number.

803949631 is a deficient number, since it is larger than the sum of its proper divisors (1).

803949631 is an equidigital number, since it uses as much as digits as its factorization.

803949631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 803949631 is about 28354.0055547713. The cubic root of 803949631 is about 929.8429730642.

The spelling of 803949631 in words is "eight hundred three million, nine hundred forty-nine thousand, six hundred thirty-one".