979513 has 4 divisors (see below), whose sum is σ = 981540. Its totient is φ = 977488.

The previous prime is 979481. The next prime is 979519. The reversal of 979513 is 315979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 315979 = 17 ⋅18587.

It can be written as a sum of positive squares in 2 ways, for example, as 788544 + 190969 = 888^2 + 437^2 .

It is a cyclic number.

It is not a de Polignac number, because 979513 - 2⁵ = 979481 is a prime.

It is a Duffinian number.

979513 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (979519) 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, 183 + ... + 1411.

It is an arithmetic number, because the mean of its divisors is an integer number (245385).

2⁹⁷⁹⁵¹³ is an apocalyptic number.

It is an amenable number.

979513 is a deficient number, since it is larger than the sum of its proper divisors (2027).

979513 is a wasteful number, since it uses less digits than its factorization.

979513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026.

The product of its digits is 8505, while the sum is 34.

The square root of 979513 is about 989.7034909507. The cubic root of 979513 is about 99.3123826612.

It can be divided in two parts, 97 and 9513, that multiplied together give a triangular number (922761 = T₁₃₅₈).

The spelling of 979513 in words is "nine hundred seventy-nine thousand, five hundred thirteen".