79774121 has 16 divisors (see below), whose sum is σ = 92951040. Its totient is φ = 67055040.

The previous prime is 79774091. The next prime is 79774127. The reversal of 79774121 is 12147797.

It is a cyclic number.

It is not a de Polignac number, because 79774121 - 2¹⁰ = 79773097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79774127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99695 + ... + 100491.

It is an arithmetic number, because the mean of its divisors is an integer number (5809440).

Almost surely, 2^79774121 is an apocalyptic number.

It is an amenable number.

79774121 is a deficient number, since it is larger than the sum of its proper divisors (13176919).

79774121 is a wasteful number, since it uses less digits than its factorization.

79774121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064.

The product of its digits is 24696, while the sum is 38.

The square root of 79774121 is about 8931.6359643685. The cubic root of 79774121 is about 430.4810211048.

The spelling of 79774121 in words is "seventy-nine million, seven hundred seventy-four thousand, one hundred twenty-one".