73909964 has 6 divisors (see below), whose sum is σ = 129342444. Its totient is φ = 36954980.

The previous prime is 73909939. The next prime is 73909967. The reversal of 73909964 is 46990937.

It is not an unprimeable number, because it can be changed into a prime (73909967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9238742 + ... + 9238749.

It is an arithmetic number, because the mean of its divisors is an integer number (21557074).

Almost surely, 2^73909964 is an apocalyptic number.

It is an amenable number.

73909964 is a deficient number, since it is larger than the sum of its proper divisors (55432480).

73909964 is a wasteful number, since it uses less digits than its factorization.

73909964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18477495 (or 18477493 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 73909964 is about 8597.0904380494. The cubic root of 73909964 is about 419.6633053674.

The spelling of 73909964 in words is "seventy-three million, nine hundred nine thousand, nine hundred sixty-four".