149621179 has 4 divisors (see below), whose sum is σ = 154780560. Its totient is φ = 144461800.

The previous prime is 149621161. The next prime is 149621189. The reversal of 149621179 is 971126941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 971126941 = 229 ⋅4240729.

It is a cyclic number.

It is not a de Polignac number, because 149621179 - 2⁷ = 149621051 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149621119) 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, 2579647 + ... + 2579704.

It is an arithmetic number, because the mean of its divisors is an integer number (38695140).

Almost surely, 2^149621179 is an apocalyptic number.

149621179 is a deficient number, since it is larger than the sum of its proper divisors (5159381).

149621179 is an equidigital number, since it uses as much as digits as its factorization.

149621179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159380.

The product of its digits is 27216, while the sum is 40.

The square root of 149621179 is about 12231.9736347002. The cubic root of 149621179 is about 530.8816215460.

The spelling of 149621179 in words is "one hundred forty-nine million, six hundred twenty-one thousand, one hundred seventy-nine".