121879849 has 8 divisors (see below), whose sum is σ = 150006080. Its totient is φ = 96432336.

The previous prime is 121879841. The next prime is 121879859. The reversal of 121879849 is 948978121.

121879849 = 1112² + 1113² + ... + 1202².

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

It is not a de Polignac number, because 121879849 - 2³ = 121879841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121879841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669579 + ... + 669760.

It is an arithmetic number, because the mean of its divisors is an integer number (18750760).

Almost surely, 2^121879849 is an apocalyptic number.

It is an amenable number.

121879849 is a deficient number, since it is larger than the sum of its proper divisors (28126231).

121879849 is a wasteful number, since it uses less digits than its factorization.

121879849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339359.

The product of its digits is 290304, while the sum is 49.

The square root of 121879849 is about 11039.9206971789. The cubic root of 121879849 is about 495.8046959678.

The spelling of 121879849 in words is "one hundred twenty-one million, eight hundred seventy-nine thousand, eight hundred forty-nine".