80399847 has 16 divisors (see below), whose sum is σ = 117629568. Its totient is φ = 48442080.

The previous prime is 80399821. The next prime is 80399863. The reversal of 80399847 is 74899308.

It is not a de Polignac number, because 80399847 - 2⁸ = 80399591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80399796 and 80399805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80399897) 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, 1333 + ... + 12750.

It is an arithmetic number, because the mean of its divisors is an integer number (7351848).

Almost surely, 2^80399847 is an apocalyptic number.

80399847 is a deficient number, since it is larger than the sum of its proper divisors (37229721).

80399847 is a wasteful number, since it uses less digits than its factorization.

80399847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14270.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 80399847 is about 8966.5961769224. The cubic root of 80399847 is about 431.6036155298.

The spelling of 80399847 in words is "eighty million, three hundred ninety-nine thousand, eight hundred forty-seven".