79481091 has 8 divisors (see below), whose sum is σ = 106438480. Its totient is φ = 52755552.

The previous prime is 79481081. The next prime is 79481107. The reversal of 79481091 is 19018497.

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 79481091 - 2⁷ = 79480963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79481081) 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, 57160 + ... + 58533.

It is an arithmetic number, because the mean of its divisors is an integer number (13304810).

Almost surely, 2^79481091 is an apocalyptic number.

79481091 is a deficient number, since it is larger than the sum of its proper divisors (26957389).

79481091 is a wasteful number, since it uses less digits than its factorization.

79481091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115925.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 79481091 is about 8915.2168229382. The cubic root of 79481091 is about 429.9532867950.

The spelling of 79481091 in words is "seventy-nine million, four hundred eighty-one thousand, ninety-one".