964386391 has 2 divisors, whose sum is σ = 964386392. Its totient is φ = 964386390.

The previous prime is 964386383. The next prime is 964386407. The reversal of 964386391 is 193683469.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 964386391 - 2³ = 964386383 is a prime.

It is a super-2 number, since 2×964386391² = 1860082222292009762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (964386331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482193195 + 482193196.

It is an arithmetic number, because the mean of its divisors is an integer number (482193196).

Almost surely, 2^964386391 is an apocalyptic number.

964386391 is a deficient number, since it is larger than the sum of its proper divisors (1).

964386391 is an equidigital number, since it uses as much as digits as its factorization.

964386391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 49.

The square root of 964386391 is about 31054.5711772035. The cubic root of 964386391 is about 987.9850153032.

The spelling of 964386391 in words is "nine hundred sixty-four million, three hundred eighty-six thousand, three hundred ninety-one".