901979 has 4 divisors (see below), whose sum is σ = 971376. Its totient is φ = 832584.

The previous prime is 901973. The next prime is 901993. The reversal of 901979 is 979109.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 901979 - 2⁴ = 901963 is a prime.

It is a super-2 number, since 2×901979² = 1627132232882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (901973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34679 + ... + 34704.

It is an arithmetic number, because the mean of its divisors is an integer number (242844).

2⁹⁰¹⁹⁷⁹ is an apocalyptic number.

901979 is a deficient number, since it is larger than the sum of its proper divisors (69397).

901979 is a wasteful number, since it uses less digits than its factorization.

901979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69396.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 901979 is about 949.7257498878. The cubic root of 901979 is about 96.6196534504.

The spelling of 901979 in words is "nine hundred one thousand, nine hundred seventy-nine".