149309679 has 4 divisors (see below), whose sum is σ = 199079576. Its totient is φ = 99539784.

The previous prime is 149309653. The next prime is 149309687. The reversal of 149309679 is 976903941.

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

It is not a de Polignac number, because 149309679 - 2¹⁷ = 149178607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149309579) 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, 24884944 + ... + 24884949.

It is an arithmetic number, because the mean of its divisors is an integer number (49769894).

Almost surely, 2^149309679 is an apocalyptic number.

149309679 is a deficient number, since it is larger than the sum of its proper divisors (49769897).

149309679 is an equidigital number, since it uses as much as digits as its factorization.

149309679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49769896.

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 149309679 is about 12219.2339776272. The cubic root of 149309679 is about 530.5129470899.

The spelling of 149309679 in words is "one hundred forty-nine million, three hundred nine thousand, six hundred seventy-nine".