79890481 has 8 divisors (see below), whose sum is σ = 87820128. Its totient is φ = 72072000.

The previous prime is 79890479. The next prime is 79890487. The reversal of 79890481 is 18409897.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79890481 - 2¹ = 79890479 is a prime.

It is a super-2 number, since 2×79890481² = 12764977908822722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79890487) 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, 26280 + ... + 29161.

It is an arithmetic number, because the mean of its divisors is an integer number (10977516).

Almost surely, 2^79890481 is an apocalyptic number.

It is an amenable number.

79890481 is a deficient number, since it is larger than the sum of its proper divisors (7929647).

79890481 is a wasteful number, since it uses less digits than its factorization.

79890481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55583.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 79890481 is about 8938.1475150056. The cubic root of 79890481 is about 430.6902219344.

The spelling of 79890481 in words is "seventy-nine million, eight hundred ninety thousand, four hundred eighty-one".