149128679 has 4 divisors (see below), whose sum is σ = 170432784. Its totient is φ = 127824576.

The previous prime is 149128669. The next prime is 149128717. The reversal of 149128679 is 976821941.

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

It is a cyclic number.

It is not a de Polignac number, because 149128679 - 2¹⁶ = 149063143 is a prime.

It is a super-3 number, since 3×149128679³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149128669) 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, 10652042 + ... + 10652055.

It is an arithmetic number, because the mean of its divisors is an integer number (42608196).

Almost surely, 2^149128679 is an apocalyptic number.

149128679 is a deficient number, since it is larger than the sum of its proper divisors (21304105).

149128679 is an equidigital number, since it uses as much as digits as its factorization.

149128679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21304104.

The product of its digits is 217728, while the sum is 47.

The square root of 149128679 is about 12211.8253754302. The cubic root of 149128679 is about 530.2984897479.

The spelling of 149128679 in words is "one hundred forty-nine million, one hundred twenty-eight thousand, six hundred seventy-nine".