920479 has 4 divisors (see below), whose sum is σ = 1051984. Its totient is φ = 788976.

The previous prime is 920477. The next prime is 920497. The reversal of 920479 is 974029.

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 920479 - 2¹ = 920477 is a prime.

It is a Duffinian number.

920479 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 920479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920473) 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, 65742 + ... + 65755.

It is an arithmetic number, because the mean of its divisors is an integer number (262996).

2⁹²⁰⁴⁷⁹ is an apocalyptic number.

920479 is a deficient number, since it is larger than the sum of its proper divisors (131505).

920479 is a wasteful number, since it uses less digits than its factorization.

920479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131504.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 920479 is about 959.4159681806. The cubic root of 920479 is about 97.2757590429.

The spelling of 920479 in words is "nine hundred twenty thousand, four hundred seventy-nine".