964389731 has 4 divisors (see below), whose sum is σ = 964497912. Its totient is φ = 964281552.

The previous prime is 964389683. The next prime is 964389743. The reversal of 964389731 is 137983469.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137983469 = 13 ⋅10614113.

It is a cyclic number.

It is not a de Polignac number, because 964389731 - 2²² = 960195427 is a prime.

It is a super-2 number, since 2×964389731² = 1860095106516504722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 964389731.

It is not an unprimeable number, because it can be changed into a prime (964389781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39386 + ... + 58991.

It is an arithmetic number, because the mean of its divisors is an integer number (241124478).

Almost surely, 2^964389731 is an apocalyptic number.

964389731 is a deficient number, since it is larger than the sum of its proper divisors (108181).

964389731 is an equidigital number, since it uses as much as digits as its factorization.

964389731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108180.

The product of its digits is 979776, while the sum is 50.

The square root of 964389731 is about 31054.6249534590. The cubic root of 964389731 is about 987.9861558786.

The spelling of 964389731 in words is "nine hundred sixty-four million, three hundred eighty-nine thousand, seven hundred thirty-one".