79982090 has 16 divisors (see below), whose sum is σ = 144766440. Its totient is φ = 31815360.

The previous prime is 79982083. The next prime is 79982101. The reversal of 79982090 is 9028997.

It can be written as a sum of positive squares in 4 ways, for example, as 13184161 + 66797929 = 3631^2 + 8173^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20285 + ... + 23904.

Almost surely, 2^79982090 is an apocalyptic number.

79982090 is a deficient number, since it is larger than the sum of its proper divisors (64784350).

79982090 is a wasteful number, since it uses less digits than its factorization.

79982090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44377.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 79982090 is about 8943.2706545201. The cubic root of 79982090 is about 430.8547806688.

The spelling of 79982090 in words is "seventy-nine million, nine hundred eighty-two thousand, ninety".