73399940 has 24 divisors (see below), whose sum is σ = 159113472. Its totient is φ = 28412640.

The previous prime is 73399919. The next prime is 73399973. The reversal of 73399940 is 4999337.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 73399891 and 73399900.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58574 + ... + 59813.

It is an arithmetic number, because the mean of its divisors is an integer number (6629728).

Almost surely, 2^73399940 is an apocalyptic number.

It is an amenable number.

73399940 is an abundant number, since it is smaller than the sum of its proper divisors (85713532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73399940 is a wasteful number, since it uses less digits than its factorization.

73399940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118427 (or 118425 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 73399940 is about 8567.3764945869. The cubic root of 73399940 is about 418.6957651599.

The spelling of 73399940 in words is "seventy-three million, three hundred ninety-nine thousand, nine hundred forty".