80609478 has 16 divisors (see below), whose sum is σ = 170702640. Its totient is φ = 25289216.

The previous prime is 80609453. The next prime is 80609479. The reversal of 80609478 is 87490608.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80609479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395043 + ... + 395246.

It is an arithmetic number, because the mean of its divisors is an integer number (10668915).

Almost surely, 2^80609478 is an apocalyptic number.

80609478 is an abundant number, since it is smaller than the sum of its proper divisors (90093162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80609478 is a wasteful number, since it uses less digits than its factorization.

80609478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790311.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 80609478 is about 8978.2781199961. The cubic root of 80609478 is about 431.9784046990.

The spelling of 80609478 in words is "eighty million, six hundred nine thousand, four hundred seventy-eight".