79403505 has 16 divisors (see below), whose sum is σ = 127759680. Its totient is φ = 42110528.

The previous prime is 79403503. The next prime is 79403507. The reversal of 79403505 is 50530497.

It is an interprime number because it is at equal distance from previous prime (79403503) and next prime (79403507).

It is a cyclic number.

It is not a de Polignac number, because 79403505 - 2¹ = 79403503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79403503) 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, 12102 + ... + 17471.

It is an arithmetic number, because the mean of its divisors is an integer number (7984980).

Almost surely, 2^79403505 is an apocalyptic number.

It is an amenable number.

79403505 is a deficient number, since it is larger than the sum of its proper divisors (48356175).

79403505 is a wasteful number, since it uses less digits than its factorization.

79403505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29760.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 79403505 is about 8910.8644361813. The cubic root of 79403505 is about 429.8133406539.

The spelling of 79403505 in words is "seventy-nine million, four hundred three thousand, five hundred five".