79340669 has 4 divisors (see below), whose sum is σ = 79492896. Its totient is φ = 79188444.

The previous prime is 79340659. The next prime is 79340671. The reversal of 79340669 is 96604397.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79340669 - 2¹² = 79336573 is a prime.

It is a super-2 number, since 2×79340669² = 12589883514735122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79340609) 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, 75329 + ... + 76374.

It is an arithmetic number, because the mean of its divisors is an integer number (19873224).

Almost surely, 2^79340669 is an apocalyptic number.

It is an amenable number.

79340669 is a deficient number, since it is larger than the sum of its proper divisors (152227).

79340669 is a wasteful number, since it uses less digits than its factorization.

79340669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152226.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 79340669 is about 8907.3379300440. The cubic root of 79340669 is about 429.6999330723.

The spelling of 79340669 in words is "seventy-nine million, three hundred forty thousand, six hundred sixty-nine".