79509477 has 8 divisors (see below), whose sum is σ = 108268416. Its totient is φ = 51878432.

The previous prime is 79509467. The next prime is 79509481. The reversal of 79509477 is 77490597.

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

It is a cyclic number.

It is not a de Polignac number, because 79509477 - 2⁴ = 79509461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79509407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281808 + ... + 282089.

It is an arithmetic number, because the mean of its divisors is an integer number (13533552).

Almost surely, 2^79509477 is an apocalyptic number.

It is an amenable number.

79509477 is a deficient number, since it is larger than the sum of its proper divisors (28758939).

79509477 is a wasteful number, since it uses less digits than its factorization.

79509477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563947.

The product of its (nonzero) digits is 555660, while the sum is 48.

The square root of 79509477 is about 8916.8086779969. The cubic root of 79509477 is about 430.0044654305.

The spelling of 79509477 in words is "seventy-nine million, five hundred nine thousand, four hundred seventy-seven".