149605739 has 2 divisors, whose sum is σ = 149605740. Its totient is φ = 149605738.

The previous prime is 149605723. The next prime is 149605849. The reversal of 149605739 is 937506941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149605739 - 2⁴ = 149605723 is a prime.

It is a super-2 number, since 2×149605739² = 44763754283472242, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149605739.

It is not a weakly prime, because it can be changed into another prime (149625739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74802869 + 74802870.

It is an arithmetic number, because the mean of its divisors is an integer number (74802870).

Almost surely, 2^149605739 is an apocalyptic number.

149605739 is a deficient number, since it is larger than the sum of its proper divisors (1).

149605739 is an equidigital number, since it uses as much as digits as its factorization.

149605739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 149605739 is about 12231.3424855982. The cubic root of 149605739 is about 530.8633596612.

The spelling of 149605739 in words is "one hundred forty-nine million, six hundred five thousand, seven hundred thirty-nine".