117779146 has 8 divisors (see below), whose sum is σ = 178490340. Its totient is φ = 58282368.

The previous prime is 117779093. The next prime is 117779147. The reversal of 117779146 is 641977711.

It can be written as a sum of positive squares in 2 ways, for example, as 112890625 + 4888521 = 10625^2 + 2211^2 .

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

It is not an unprimeable number, because it can be changed into a prime (117779147) 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, 303361 + ... + 303748.

Almost surely, 2^117779146 is an apocalyptic number.

117779146 is a deficient number, since it is larger than the sum of its proper divisors (60711194).

117779146 is an equidigital number, since it uses as much as digits as its factorization.

117779146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607208.

The product of its digits is 74088, while the sum is 43.

The square root of 117779146 is about 10852.6101008006. The cubic root of 117779146 is about 490.1806164644.

The spelling of 117779146 in words is "one hundred seventeen million, seven hundred seventy-nine thousand, one hundred forty-six".