80400104 has 8 divisors (see below), whose sum is σ = 150750210. Its totient is φ = 40200048.

The previous prime is 80400097. The next prime is 80400109. The reversal of 80400104 is 40100408.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 65577604 + 14822500 = 8098^2 + 3850^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (80400109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5024999 + ... + 5025014.

Almost surely, 2^80400104 is an apocalyptic number.

It is an amenable number.

80400104 is a deficient number, since it is larger than the sum of its proper divisors (70350106).

80400104 is a wasteful number, since it uses less digits than its factorization.

80400104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050019 (or 10050015 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 80400104 is about 8966.6105078787. The cubic root of 80400104 is about 431.6040754064.

The spelling of 80400104 in words is "eighty million, four hundred thousand, one hundred four".