913944431 has 2 divisors, whose sum is σ = 913944432. Its totient is φ = 913944430.

The previous prime is 913944377. The next prime is 913944433. The reversal of 913944431 is 134449319.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-913944431 is a prime.

It is a super-2 number, since 2×913944431² = 1670588845911827522, which contains 22 as substring.

Together with 913944433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913944433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456972215 + 456972216.

It is an arithmetic number, because the mean of its divisors is an integer number (456972216).

Almost surely, 2^913944431 is an apocalyptic number.

913944431 is a deficient number, since it is larger than the sum of its proper divisors (1).

913944431 is an equidigital number, since it uses as much as digits as its factorization.

913944431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 38.

The square root of 913944431 is about 30231.5138721170. The cubic root of 913944431 is about 970.4502217922.

The spelling of 913944431 in words is "nine hundred thirteen million, nine hundred forty-four thousand, four hundred thirty-one".