481597139 has 4 divisors (see below), whose sum is σ = 488785224. Its totient is φ = 474409056.

The previous prime is 481597087. The next prime is 481597147. The reversal of 481597139 is 931795184.

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 481597139 - 2⁸ = 481596883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 481597093 and 481597102.

It is not an unprimeable number, because it can be changed into a prime (481597159) 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, 3593942 + ... + 3594075.

It is an arithmetic number, because the mean of its divisors is an integer number (122196306).

Almost surely, 2^481597139 is an apocalyptic number.

481597139 is a deficient number, since it is larger than the sum of its proper divisors (7188085).

481597139 is an equidigital number, since it uses as much as digits as its factorization.

481597139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7188084.

The product of its digits is 272160, while the sum is 47.

The square root of 481597139 is about 21945.3215743128. The cubic root of 481597139 is about 783.8409818009.

The spelling of 481597139 in words is "four hundred eighty-one million, five hundred ninety-seven thousand, one hundred thirty-nine".