111379977 has 24 divisors (see below), whose sum is σ = 165582144. Its totient is φ = 72113184.

The previous prime is 111379973. The next prime is 111379987. The reversal of 111379977 is 779973111.

It is not a de Polignac number, because 111379977 - 2² = 111379973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111379973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47998 + ... + 50264.

It is an arithmetic number, because the mean of its divisors is an integer number (6899256).

Almost surely, 2^111379977 is an apocalyptic number.

It is an amenable number.

111379977 is a deficient number, since it is larger than the sum of its proper divisors (54202167).

111379977 is a wasteful number, since it uses less digits than its factorization.

111379977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429 (or 2426 counting only the distinct ones).

The product of its digits is 83349, while the sum is 45.

The square root of 111379977 is about 10553.6712569608. The cubic root of 111379977 is about 481.1373161259.

The spelling of 111379977 in words is "one hundred eleven million, three hundred seventy-nine thousand, nine hundred seventy-seven".