72938489 has 4 divisors (see below), whose sum is σ = 78549156. Its totient is φ = 67327824.

The previous prime is 72938447. The next prime is 72938527. The reversal of 72938489 is 98483927.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10291264 + 62647225 = 3208^2 + 7915^2 .

It is a cyclic number.

It is not a de Polignac number, because 72938489 - 2⁸ = 72938233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72938429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2805314 + ... + 2805339.

It is an arithmetic number, because the mean of its divisors is an integer number (19637289).

Almost surely, 2^72938489 is an apocalyptic number.

It is an amenable number.

72938489 is a deficient number, since it is larger than the sum of its proper divisors (5610667).

72938489 is a wasteful number, since it uses less digits than its factorization.

72938489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5610666.

The product of its digits is 870912, while the sum is 50.

The square root of 72938489 is about 8540.4033277123. The cubic root of 72938489 is about 417.8165006553.

The spelling of 72938489 in words is "seventy-two million, nine hundred thirty-eight thousand, four hundred eighty-nine".