959313721 has 4 divisors (see below), whose sum is σ = 965666944. Its totient is φ = 952960500.

The previous prime is 959313709. The next prime is 959313749. The reversal of 959313721 is 127313959.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 127313959 = 5441 ⋅23399.

It is a cyclic number.

It is not a de Polignac number, because 959313721 - 2¹⁷ = 959182649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (959313701) 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 3 ways as a sum of consecutive naturals, for example, 3176385 + ... + 3176686.

It is an arithmetic number, because the mean of its divisors is an integer number (241416736).

Almost surely, 2^959313721 is an apocalyptic number.

It is an amenable number.

959313721 is a deficient number, since it is larger than the sum of its proper divisors (6353223).

959313721 is a wasteful number, since it uses less digits than its factorization.

959313721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6353222.

The product of its digits is 51030, while the sum is 40.

The square root of 959313721 is about 30972.7900099426. The cubic root of 959313721 is about 986.2497029229.

The spelling of 959313721 in words is "nine hundred fifty-nine million, three hundred thirteen thousand, seven hundred twenty-one".