72940199 has 4 divisors (see below), whose sum is σ = 76111536. Its totient is φ = 69768864.

The previous prime is 72940187. The next prime is 72940207. The reversal of 72940199 is 99104927.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99104927 = 809 ⋅122503.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72940199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72940129) 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, 1585634 + ... + 1585679.

It is an arithmetic number, because the mean of its divisors is an integer number (19027884).

Almost surely, 2^72940199 is an apocalyptic number.

72940199 is a deficient number, since it is larger than the sum of its proper divisors (3171337).

72940199 is a wasteful number, since it uses less digits than its factorization.

72940199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171336.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 72940199 is about 8540.5034394935. The cubic root of 72940199 is about 417.8197657838.

The spelling of 72940199 in words is "seventy-two million, nine hundred forty thousand, one hundred ninety-nine".