485920391 has 12 divisors (see below), whose sum is σ = 534758952. Its totient is φ = 441210000.

The previous prime is 485920387. The next prime is 485920411. The reversal of 485920391 is 193029584.

It is not a de Polignac number, because 485920391 - 2² = 485920387 is a prime.

It is a super-2 number, since 2×485920391² = 472237252779185762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485920301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125261 + ... + 129081.

It is an arithmetic number, because the mean of its divisors is an integer number (44563246).

Almost surely, 2^485920391 is an apocalyptic number.

485920391 is a deficient number, since it is larger than the sum of its proper divisors (48838561).

485920391 is a wasteful number, since it uses less digits than its factorization.

485920391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4894 (or 4883 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 485920391 is about 22043.6020423160. The cubic root of 485920391 is about 786.1794869881.

The spelling of 485920391 in words is "four hundred eighty-five million, nine hundred twenty thousand, three hundred ninety-one".