531899478 has 48 divisors (see below), whose sum is σ = 1287900432. Its totient is φ = 157248000.

The previous prime is 531899453. The next prime is 531899479. The reversal of 531899478 is 874998135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531899479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24643 + ... + 40878.

It is an arithmetic number, because the mean of its divisors is an integer number (26831259).

Almost surely, 2^531899478 is an apocalyptic number.

531899478 is an abundant number, since it is smaller than the sum of its proper divisors (756000954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531899478 is a wasteful number, since it uses less digits than its factorization.

531899478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65581 (or 65578 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 531899478 is about 23062.9459956875. The cubic root of 531899478 is about 810.2328640040.

It can be divided in two parts, 531 and 899478, that added together give a palindrome (900009).

The spelling of 531899478 in words is "five hundred thirty-one million, eight hundred ninety-nine thousand, four hundred seventy-eight".