73999538 has 8 divisors (see below), whose sum is σ = 117528732. Its totient is φ = 34823296.

The previous prime is 73999493. The next prime is 73999567. The reversal of 73999538 is 83599937.

It can be written as a sum of positive squares in 2 ways, for example, as 60109009 + 13890529 = 7753^2 + 3727^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 73999538.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1088195 + ... + 1088262.

Almost surely, 2^73999538 is an apocalyptic number.

73999538 is a deficient number, since it is larger than the sum of its proper divisors (43529194).

73999538 is a wasteful number, since it uses less digits than its factorization.

73999538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176476.

The product of its digits is 1837080, while the sum is 53.

The square root of 73999538 is about 8602.2984137962. The cubic root of 73999538 is about 419.8327716712.

The spelling of 73999538 in words is "seventy-three million, nine hundred ninety-nine thousand, five hundred thirty-eight".