955980921 has 16 divisors (see below), whose sum is σ = 1457280000. Its totient is φ = 546069648.

The previous prime is 955980889. The next prime is 955980937. The reversal of 955980921 is 129089559.

It is a happy number.

It is not a de Polignac number, because 955980921 - 2⁵ = 955980889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (955982921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62380 + ... + 76178.

It is an arithmetic number, because the mean of its divisors is an integer number (91080000).

Almost surely, 2^955980921 is an apocalyptic number.

It is an amenable number.

955980921 is a deficient number, since it is larger than the sum of its proper divisors (501299079).

955980921 is a wasteful number, since it uses less digits than its factorization.

955980921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17108.

The product of its (nonzero) digits is 291600, while the sum is 48.

The square root of 955980921 is about 30918.9411364620. The cubic root of 955980921 is about 985.1062511750.

The spelling of 955980921 in words is "nine hundred fifty-five million, nine hundred eighty thousand, nine hundred twenty-one".