80400001 has 24 divisors (see below), whose sum is σ = 95225760. Its totient is φ = 67132800.

The previous prime is 80399999. The next prime is 80400007. The reversal of 80400001 is 10000408.

It is not a de Polignac number, because 80400001 - 2¹ = 80399999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80400007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 285981 + ... + 286261.

It is an arithmetic number, because the mean of its divisors is an integer number (3967740).

Almost surely, 2^80400001 is an apocalyptic number.

It is an amenable number.

80400001 is a deficient number, since it is larger than the sum of its proper divisors (14825759).

80400001 is a wasteful number, since it uses less digits than its factorization.

80400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 80400001 is about 8966.6047643464. The cubic root of 80400001 is about 431.6038910980.

Adding to 80400001 its reverse (10000408), we get a palindrome (90400409).

The spelling of 80400001 in words is "eighty million, four hundred thousand, one".