1177979 has 4 divisors (see below), whose sum is σ = 1285080. Its totient is φ = 1070880.

The previous prime is 1177949. The next prime is 1177987. The reversal of 1177979 is 9797711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1177979 - 2⁸ = 1177723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1177919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53534 + ... + 53555.

It is an arithmetic number, because the mean of its divisors is an integer number (321270).

2^1177979 is an apocalyptic number.

1177979 is a deficient number, since it is larger than the sum of its proper divisors (107101).

1177979 is a wasteful number, since it uses less digits than its factorization.

1177979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107100.

The product of its digits is 27783, while the sum is 41.

The square root of 1177979 is about 1085.3474098186. The cubic root of 1177979 is about 105.6118173854.

The spelling of 1177979 in words is "one million, one hundred seventy-seven thousand, nine hundred seventy-nine".