77121914 has 8 divisors (see below), whose sum is σ = 115840800. Its totient is φ = 38508316.

The previous prime is 77121907. The next prime is 77121923. The reversal of 77121914 is 41912177.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 24464 + ... + 27435.

It is an arithmetic number, because the mean of its divisors is an integer number (14480100).

Almost surely, 2^77121914 is an apocalyptic number.

77121914 is a deficient number, since it is larger than the sum of its proper divisors (38718886).

77121914 is a wasteful number, since it uses less digits than its factorization.

77121914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52644.

The product of its digits is 3528, while the sum is 32.

The square root of 77121914 is about 8781.9083347528. The cubic root of 77121914 is about 425.6564968070.

The spelling of 77121914 in words is "seventy-seven million, one hundred twenty-one thousand, nine hundred fourteen".