531379949 has 8 divisors (see below), whose sum is σ = 535310400. Its totient is φ = 527462496.

The previous prime is 531379943. The next prime is 531379957. The reversal of 531379949 is 949973135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531379949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531379897 and 531379906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531379943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88022 + ... + 93864.

It is an arithmetic number, because the mean of its divisors is an integer number (66913800).

Almost surely, 2^531379949 is an apocalyptic number.

It is an amenable number.

531379949 is a deficient number, since it is larger than the sum of its proper divisors (3930451).

531379949 is a wasteful number, since it uses less digits than its factorization.

531379949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6499.

The product of its digits is 918540, while the sum is 50.

The square root of 531379949 is about 23051.6799604714. The cubic root of 531379949 is about 809.9689816908.

The spelling of 531379949 in words is "five hundred thirty-one million, three hundred seventy-nine thousand, nine hundred forty-nine".