72922499 has 4 divisors (see below), whose sum is σ = 78531936. Its totient is φ = 67313064.

The previous prime is 72922483. The next prime is 72922519. The reversal of 72922499 is 99422927.

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: 99422927 = 173 ⋅574699.

It is not a de Polignac number, because 72922499 - 2⁴ = 72922483 is a prime.

It is a super-3 number, since 3×72922499³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72922429) 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, 2804699 + ... + 2804724.

It is an arithmetic number, because the mean of its divisors is an integer number (19632984).

Almost surely, 2^72922499 is an apocalyptic number.

72922499 is a deficient number, since it is larger than the sum of its proper divisors (5609437).

72922499 is a wasteful number, since it uses less digits than its factorization.

72922499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609436.

The product of its digits is 163296, while the sum is 44.

The square root of 72922499 is about 8539.4671379425. The cubic root of 72922499 is about 417.7859663690.

The spelling of 72922499 in words is "seventy-two million, nine hundred twenty-two thousand, four hundred ninety-nine".