1144191979 has 8 divisors (see below), whose sum is σ = 1315978208. Its totient is φ = 974488320.

The previous prime is 1144191973. The next prime is 1144192001. The reversal of 1144191979 is 9791914411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144191979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144191973) 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, 519462 + ... + 521659.

It is an arithmetic number, because the mean of its divisors is an integer number (164497276).

Almost surely, 2^1144191979 is an apocalyptic number.

1144191979 is a deficient number, since it is larger than the sum of its proper divisors (171786229).

1144191979 is a wasteful number, since it uses less digits than its factorization.

1144191979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041285.

The product of its digits is 81648, while the sum is 46.

The square root of 1144191979 is about 33825.9069205838. The cubic root of 1144191979 is about 1045.9228065707.

The spelling of 1144191979 in words is "one billion, one hundred forty-four million, one hundred ninety-one thousand, nine hundred seventy-nine".