72950399 has 4 divisors (see below), whose sum is σ = 75465960. Its totient is φ = 70434840.

The previous prime is 72950387. The next prime is 72950401. The reversal of 72950399 is 99305927.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72950399 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 (72950369) 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, 1257737 + ... + 1257794.

It is an arithmetic number, because the mean of its divisors is an integer number (18866490).

Almost surely, 2^72950399 is an apocalyptic number.

72950399 is a deficient number, since it is larger than the sum of its proper divisors (2515561).

72950399 is a wasteful number, since it uses less digits than its factorization.

72950399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515560.

The product of its (nonzero) digits is 153090, while the sum is 44.

The square root of 72950399 is about 8541.1005731112. The cubic root of 72950399 is about 417.8392409294.

The spelling of 72950399 in words is "seventy-two million, nine hundred fifty thousand, three hundred ninety-nine".