121964479 has 12 divisors (see below), whose sum is σ = 152791464. Its totient is φ = 96498864.

The previous prime is 121964471. The next prime is 121964503. The reversal of 121964479 is 974469121.

It is not a de Polignac number, because 121964479 - 2³ = 121964471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121964471) 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, 95097 + ... + 96370.

It is an arithmetic number, because the mean of its divisors is an integer number (12732622).

Almost surely, 2^121964479 is an apocalyptic number.

121964479 is a deficient number, since it is larger than the sum of its proper divisors (30826985).

121964479 is a wasteful number, since it uses less digits than its factorization.

121964479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191494 (or 191487 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 121964479 is about 11043.7529400109. The cubic root of 121964479 is about 495.9194271110.

The spelling of 121964479 in words is "one hundred twenty-one million, nine hundred sixty-four thousand, four hundred seventy-nine".