1187979404 has 12 divisors (see below), whose sum is σ = 2127312264. Its totient is φ = 580175904.

The previous prime is 1187979349. The next prime is 1187979413. The reversal of 1187979404 is 4049797811.

It is a super-2 number, since 2×1187979404² = 2822590128656390432, which contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

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, 3453257 + ... + 3453600.

It is an arithmetic number, because the mean of its divisors is an integer number (177276022).

Almost surely, 2^1187979404 is an apocalyptic number.

It is an amenable number.

1187979404 is a deficient number, since it is larger than the sum of its proper divisors (939332860).

1187979404 is a wasteful number, since it uses less digits than its factorization.

1187979404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6906904 (or 6906902 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 1187979404 is about 34467.0771026497. The cubic root of 1187979404 is about 1059.0983801033.

The spelling of 1187979404 in words is "one billion, one hundred eighty-seven million, nine hundred seventy-nine thousand, four hundred four".