7872999 has 8 divisors (see below), whose sum is σ = 10741632. Its totient is φ = 5126520.

The previous prime is 7872947. The next prime is 7873001. The reversal of 7872999 is 9992787.

It is a happy number.

7872999 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 7872999 - 2⁷ = 7872871 is a prime.

It is a super-2 number, since 2×7872999² = 123968226508002, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872919) 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, 30387 + ... + 30644.

It is an arithmetic number, because the mean of its divisors is an integer number (1342704).

Almost surely, 2^7872999 is an apocalyptic number.

7872999 is a deficient number, since it is larger than the sum of its proper divisors (2868633).

7872999 is a wasteful number, since it uses less digits than its factorization.

7872999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61077.

The product of its digits is 571536, while the sum is 51.

The square root of 7872999 is about 2805.8864909329. The cubic root of 7872999 is about 198.9360079759.

The spelling of 7872999 in words is "seven million, eight hundred seventy-two thousand, nine hundred ninety-nine".