121935949 has 12 divisors (see below), whose sum is σ = 129515616. Its totient is φ = 114582248.

The previous prime is 121935941. The next prime is 121935953. The reversal of 121935949 is 949539121.

It is not a de Polignac number, because 121935949 - 2³ = 121935941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121935941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79302 + ... + 80824.

It is an arithmetic number, because the mean of its divisors is an integer number (10792968).

Almost surely, 2^121935949 is an apocalyptic number.

It is an amenable number.

121935949 is a deficient number, since it is larger than the sum of its proper divisors (7579667).

121935949 is an equidigital number, since it uses as much as digits as its factorization.

121935949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664 (or 1605 counting only the distinct ones).

The product of its digits is 87480, while the sum is 43.

The square root of 121935949 is about 11042.4611839934. The cubic root of 121935949 is about 495.8807555111.

The spelling of 121935949 in words is "one hundred twenty-one million, nine hundred thirty-five thousand, nine hundred forty-nine".