979903 has 4 divisors (see below), whose sum is σ = 1000800. Its totient is φ = 959008.

The previous prime is 979889. The next prime is 979907. The reversal of 979903 is 309979.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 309979 = 107 ⋅2897.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-979903 is a prime.

It is a Duffinian number.

979903 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979907) 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, 10378 + ... + 10471.

It is an arithmetic number, because the mean of its divisors is an integer number (250200).

2⁹⁷⁹⁹⁰³ is an apocalyptic number.

979903 is a deficient number, since it is larger than the sum of its proper divisors (20897).

979903 is a wasteful number, since it uses less digits than its factorization.

979903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20896.

The product of its (nonzero) digits is 15309, while the sum is 37.

The square root of 979903 is about 989.9005000504. The cubic root of 979903 is about 99.3255615538.

It can be divided in two parts, 97 and 9903, that added together give a 4-th power (10000 = 10⁴).

The spelling of 979903 in words is "nine hundred seventy-nine thousand, nine hundred three".