964019421 has 32 divisors (see below), whose sum is σ = 1487520000. Its totient is φ = 616279104.

The previous prime is 964019387. The next prime is 964019449. The reversal of 964019421 is 124910469.

It is a happy number.

964019421 is a `hidden beast` number, since 9 + 640 + 1 + 9 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 964019421 - 2⁷ = 964019293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (964019621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112536 + ... + 120798.

It is an arithmetic number, because the mean of its divisors is an integer number (46485000).

Almost surely, 2^964019421 is an apocalyptic number.

It is an amenable number.

964019421 is a deficient number, since it is larger than the sum of its proper divisors (523500579).

964019421 is a wasteful number, since it uses less digits than its factorization.

964019421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8450 (or 8444 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 964019421 is about 31048.6621450909. The cubic root of 964019421 is about 987.8596828080.

The spelling of 964019421 in words is "nine hundred sixty-four million, nineteen thousand, four hundred twenty-one".