79969151 has 4 divisors (see below), whose sum is σ = 79988304. Its totient is φ = 79950000.

The previous prime is 79969133. The next prime is 79969163. The reversal of 79969151 is 15196997.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79969151 - 2¹⁸ = 79707007 is a prime.

It is a super-2 number, since 2×79969151² = 12790130223321602, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79969096 and 79969105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79969111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350 + ... + 12651.

It is an arithmetic number, because the mean of its divisors is an integer number (19997076).

Almost surely, 2^79969151 is an apocalyptic number.

79969151 is a deficient number, since it is larger than the sum of its proper divisors (19153).

79969151 is a wasteful number, since it uses less digits than its factorization.

79969151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19152.

The product of its digits is 153090, while the sum is 47.

The square root of 79969151 is about 8942.5472321928. The cubic root of 79969151 is about 430.8315457560.

The spelling of 79969151 in words is "seventy-nine million, nine hundred sixty-nine thousand, one hundred fifty-one".