149313779 has 8 divisors (see below), whose sum is σ = 155057760. Its totient is φ = 143609536.

The previous prime is 149313757. The next prime is 149313809. The reversal of 149313779 is 977313941.

149313779 = T₁₇₇ + T₁₇₈ + ... + T₉₆₅.

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

It is a cyclic number.

It is not a de Polignac number, because 149313779 - 2¹⁶ = 149248243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149313709) 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, 2162 + ... + 17415.

It is an arithmetic number, because the mean of its divisors is an integer number (19382220).

Almost surely, 2^149313779 is an apocalyptic number.

149313779 is a deficient number, since it is larger than the sum of its proper divisors (5743981).

149313779 is a wasteful number, since it uses less digits than its factorization.

149313779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19869.

The product of its digits is 142884, while the sum is 44.

The square root of 149313779 is about 12219.4017447664. The cubic root of 149313779 is about 530.5178029554.

The spelling of 149313779 in words is "one hundred forty-nine million, three hundred thirteen thousand, seven hundred seventy-nine".