116957721 has 8 divisors (see below), whose sum is σ = 159570400. Its totient is φ = 76158432.

The previous prime is 116957713. The next prime is 116957767. The reversal of 116957721 is 127759611.

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

It is not a de Polignac number, because 116957721 - 2³ = 116957713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 116957721.

It is not an unprimeable number, because it can be changed into a prime (116957791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453196 + ... + 453453.

It is an arithmetic number, because the mean of its divisors is an integer number (19946300).

Almost surely, 2^116957721 is an apocalyptic number.

It is an amenable number.

116957721 is a deficient number, since it is larger than the sum of its proper divisors (42612679).

116957721 is an equidigital number, since it uses as much as digits as its factorization.

116957721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906695.

The product of its digits is 26460, while the sum is 39.

The square root of 116957721 is about 10814.6993023385. The cubic root of 116957721 is about 489.0384043173.

The spelling of 116957721 in words is "one hundred sixteen million, nine hundred fifty-seven thousand, seven hundred twenty-one".