80400039 has 8 divisors (see below), whose sum is σ = 112842240. Its totient is φ = 50778936.

The previous prime is 80400029. The next prime is 80400059. The reversal of 80400039 is 93000408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80400039 - 2⁵ = 80400007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80399991 and 80400018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80400029) 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, 705207 + ... + 705320.

It is an arithmetic number, because the mean of its divisors is an integer number (14105280).

Almost surely, 2^80400039 is an apocalyptic number.

80400039 is a deficient number, since it is larger than the sum of its proper divisors (32442201).

80400039 is a wasteful number, since it uses less digits than its factorization.

80400039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410549.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 80400039 is about 8966.6068833199. The cubic root of 80400039 is about 431.6039590953.

The spelling of 80400039 in words is "eighty million, four hundred thousand, thirty-nine".