72200839 has 4 divisors (see below), whose sum is σ = 72255024. Its totient is φ = 72146656.

The previous prime is 72200833. The next prime is 72200851. The reversal of 72200839 is 93800227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93800227 = 2131 ⋅44017.

It is a cyclic number.

It is not a de Polignac number, because 72200839 - 2³ = 72200831 is a prime.

It is a super-2 number, since 2×72200839² = 10425922304607842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72200839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72200831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25042 + ... + 27775.

It is an arithmetic number, because the mean of its divisors is an integer number (18063756).

Almost surely, 2^72200839 is an apocalyptic number.

72200839 is a deficient number, since it is larger than the sum of its proper divisors (54185).

72200839 is a wasteful number, since it uses less digits than its factorization.

72200839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54184.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 72200839 is about 8497.1076843830. The cubic root of 72200839 is about 416.4032221256.

The spelling of 72200839 in words is "seventy-two million, two hundred thousand, eight hundred thirty-nine".