149137679 has 2 divisors, whose sum is σ = 149137680. Its totient is φ = 149137678.

The previous prime is 149137657. The next prime is 149137697. The reversal of 149137679 is 976731941.

149137679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (149137697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149137679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149137699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74568839 + 74568840.

It is an arithmetic number, because the mean of its divisors is an integer number (74568840).

Almost surely, 2^149137679 is an apocalyptic number.

149137679 is a deficient number, since it is larger than the sum of its proper divisors (1).

149137679 is an equidigital number, since it uses as much as digits as its factorization.

149137679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 47.

The square root of 149137679 is about 12212.1938651497. The cubic root of 149137679 is about 530.3091574711.

The spelling of 149137679 in words is "one hundred forty-nine million, one hundred thirty-seven thousand, six hundred seventy-nine".