72399335 has 4 divisors (see below), whose sum is σ = 86879208. Its totient is φ = 57919464.

The previous prime is 72399319. The next prime is 72399337. The reversal of 72399335 is 53399327.

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

It is a cyclic number.

It is not a de Polignac number, because 72399335 - 2⁴ = 72399319 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 72399292 and 72399301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72399337) 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, 7239929 + ... + 7239938.

It is an arithmetic number, because the mean of its divisors is an integer number (21719802).

Almost surely, 2^72399335 is an apocalyptic number.

72399335 is a deficient number, since it is larger than the sum of its proper divisors (14479873).

72399335 is a wasteful number, since it uses less digits than its factorization.

72399335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14479872.

The product of its digits is 153090, while the sum is 41.

The square root of 72399335 is about 8508.7798772797. The cubic root of 72399335 is about 416.7844676697.

The spelling of 72399335 in words is "seventy-two million, three hundred ninety-nine thousand, three hundred thirty-five".