72370099 has 4 divisors (see below), whose sum is σ = 72543240. Its totient is φ = 72196960.

The previous prime is 72370079. The next prime is 72370147. The reversal of 72370099 is 99007327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99007327 = 2389 ⋅41443.

It is a cyclic number.

It is not a de Polignac number, because 72370099 - 2²¹ = 70272947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72370009) 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, 85942 + ... + 86779.

It is an arithmetic number, because the mean of its divisors is an integer number (18135810).

Almost surely, 2^72370099 is an apocalyptic number.

72370099 is a deficient number, since it is larger than the sum of its proper divisors (173141).

72370099 is a wasteful number, since it uses less digits than its factorization.

72370099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173140.

The product of its (nonzero) digits is 23814, while the sum is 37.

The square root of 72370099 is about 8507.0617136588. The cubic root of 72370099 is about 416.7283587231.

The spelling of 72370099 in words is "seventy-two million, three hundred seventy thousand, ninety-nine".