149269139 has 4 divisors (see below), whose sum is σ = 149327856. Its totient is φ = 149210424.

The previous prime is 149269121. The next prime is 149269171. The reversal of 149269139 is 931962941.

It is a happy number.

149269139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 149269139 - 2¹² = 149265043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149269139.

It is not an unprimeable number, because it can be changed into a prime (149263139) 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, 25364 + ... + 30689.

It is an arithmetic number, because the mean of its divisors is an integer number (37331964).

Almost surely, 2^149269139 is an apocalyptic number.

149269139 is a deficient number, since it is larger than the sum of its proper divisors (58717).

149269139 is an equidigital number, since it uses as much as digits as its factorization.

149269139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58716.

The product of its digits is 104976, while the sum is 44.

The square root of 149269139 is about 12217.5750048854. The cubic root of 149269139 is about 530.4649284532.

The spelling of 149269139 in words is "one hundred forty-nine million, two hundred sixty-nine thousand, one hundred thirty-nine".