901904431 has 2 divisors, whose sum is σ = 901904432. Its totient is φ = 901904430.

The previous prime is 901904411. The next prime is 901904441. The reversal of 901904431 is 134409109.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 901904431 - 2¹¹ = 901902383 is a prime.

It is a super-2 number, since 2×901904431² = 1626863205314867522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 901904393 and 901904402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (901904401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450952215 + 450952216.

It is an arithmetic number, because the mean of its divisors is an integer number (450952216).

Almost surely, 2^901904431 is an apocalyptic number.

901904431 is a deficient number, since it is larger than the sum of its proper divisors (1).

901904431 is an equidigital number, since it uses as much as digits as its factorization.

901904431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 901904431 is about 30031.7237434017. The cubic root of 901904431 is about 966.1699077588.

The spelling of 901904431 in words is "nine hundred one million, nine hundred four thousand, four hundred thirty-one".