978902 has 8 divisors (see below), whose sum is σ = 1486296. Its totient is φ = 483472.

The previous prime is 978883. The next prime is 978907. The reversal of 978902 is 209879.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978907) by changing a digit.

978902 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2783 + ... + 3114.

It is an arithmetic number, because the mean of its divisors is an integer number (185787).

2⁹⁷⁸⁹⁰² is an apocalyptic number.

978902 is a deficient number, since it is larger than the sum of its proper divisors (507394).

978902 is a wasteful number, since it uses less digits than its factorization.

978902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5982.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 978902 is about 989.3947644899. The cubic root of 978902 is about 99.2917286943.

The spelling of 978902 in words is "nine hundred seventy-eight thousand, nine hundred two".