978953 has 4 divisors (see below), whose sum is σ = 1012740. Its totient is φ = 945168.

The previous prime is 978947. The next prime is 978973. The reversal of 978953 is 359879.

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

It can be written as a sum of positive squares in 2 ways, for example, as 565504 + 413449 = 752^2 + 643^2 .

It is not a de Polignac number, because 978953 - 2⁸ = 978697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 978953.

It is not an unprimeable number, because it can be changed into a prime (978973) 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, 16850 + ... + 16907.

It is an arithmetic number, because the mean of its divisors is an integer number (253185).

2⁹⁷⁸⁹⁵³ is an apocalyptic number.

It is an amenable number.

978953 is a deficient number, since it is larger than the sum of its proper divisors (33787).

978953 is a wasteful number, since it uses less digits than its factorization.

978953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33786.

The product of its digits is 68040, while the sum is 41.

The square root of 978953 is about 989.4205374865. The cubic root of 978953 is about 99.2934530039.

The spelling of 978953 in words is "nine hundred seventy-eight thousand, nine hundred fifty-three".