80540379 has 16 divisors (see below), whose sum is σ = 122545440. Its totient is φ = 52241760.

The previous prime is 80540363. The next prime is 80540399. The reversal of 80540379 is 97304508.

80540379 is a `hidden beast` number, since 80 + 540 + 37 + 9 = 666.

It is not a de Polignac number, because 80540379 - 2⁴ = 80540363 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (80540399) 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, 39312 + ... + 41309.

It is an arithmetic number, because the mean of its divisors is an integer number (7659090).

Almost surely, 2^80540379 is an apocalyptic number.

80540379 is a deficient number, since it is larger than the sum of its proper divisors (42005061).

80540379 is a wasteful number, since it uses less digits than its factorization.

80540379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80667 (or 80661 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 80540379 is about 8974.4291740478. The cubic root of 80540379 is about 431.8549377916.

The spelling of 80540379 in words is "eighty million, five hundred forty thousand, three hundred seventy-nine".