79132440 has 32 divisors (see below), whose sum is σ = 237397680. Its totient is φ = 21101952.

The previous prime is 79132439. The next prime is 79132447. The reversal of 79132440 is 4423197.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 79132398 and 79132407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79132447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329599 + ... + 329838.

Almost surely, 2^79132440 is an apocalyptic number.

It is an amenable number.

79132440 is an abundant number, since it is smaller than the sum of its proper divisors (158265240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79132440 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 79132440 = (40739412)₁₁.

79132440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659451 (or 659447 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 79132440 is about 8895.6416294723. The cubic root of 79132440 is about 429.3236889629.

The spelling of 79132440 in words is "seventy-nine million, one hundred thirty-two thousand, four hundred forty".