78472999 has 8 divisors (see below), whose sum is σ = 85856400. Its totient is φ = 71131200.

The previous prime is 78472993. The next prime is 78473011. The reversal of 78472999 is 99927487.

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

It is a cyclic number.

It is not a de Polignac number, because 78472999 - 2⁷ = 78472871 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 (78472993) 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, 6382 + ... + 14059.

It is an arithmetic number, because the mean of its divisors is an integer number (10732050).

Almost surely, 2^78472999 is an apocalyptic number.

78472999 is a deficient number, since it is larger than the sum of its proper divisors (7383401).

78472999 is a wasteful number, since it uses less digits than its factorization.

78472999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20801.

The product of its digits is 2286144, while the sum is 55.

The square root of 78472999 is about 8858.4986877010. The cubic root of 78472999 is about 428.1277877809.

The spelling of 78472999 in words is "seventy-eight million, four hundred seventy-two thousand, nine hundred ninety-nine".