79581490 has 16 divisors (see below), whose sum is σ = 144128448. Its totient is φ = 31636656.

The previous prime is 79581473. The next prime is 79581497. The reversal of 79581490 is 9418597.

It is not an unprimeable number, because it can be changed into a prime (79581497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22782 + ... + 26041.

It is an arithmetic number, because the mean of its divisors is an integer number (9008028).

Almost surely, 2^79581490 is an apocalyptic number.

79581490 is a deficient number, since it is larger than the sum of its proper divisors (64546958).

79581490 is a wasteful number, since it uses less digits than its factorization.

79581490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48993.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 79581490 is about 8920.8458119172. The cubic root of 79581490 is about 430.1342468882.

The spelling of 79581490 in words is "seventy-nine million, five hundred eighty-one thousand, four hundred ninety".