890978 has 8 divisors (see below), whose sum is σ = 1458000. Its totient is φ = 404980.

The previous prime is 890969. The next prime is 890993. The reversal of 890978 is 879098.

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

It is an Ulam number.

It is a nialpdrome in base 16.

It is an unprimeable number.

890978 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, 20228 + ... + 20271.

It is an arithmetic number, because the mean of its divisors is an integer number (182250).

2⁸⁹⁰⁹⁷⁸ is an apocalyptic number.

890978 is a deficient number, since it is larger than the sum of its proper divisors (567022).

890978 is a wasteful number, since it uses less digits than its factorization.

890978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40512.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 890978 is about 943.9163098496. The cubic root of 890978 is about 96.2252379096.

The spelling of 890978 in words is "eight hundred ninety thousand, nine hundred seventy-eight".