149253739 has 4 divisors (see below), whose sum is σ = 155743056. Its totient is φ = 142764424.

The previous prime is 149253733. The next prime is 149253757. The reversal of 149253739 is 937352941.

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 149253739 - 2⁵ = 149253707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149253695 and 149253704.

It is not an unprimeable number, because it can be changed into a prime (149253733) 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, 3244624 + ... + 3244669.

It is an arithmetic number, because the mean of its divisors is an integer number (38935764).

Almost surely, 2^149253739 is an apocalyptic number.

149253739 is a deficient number, since it is larger than the sum of its proper divisors (6489317).

149253739 is an equidigital number, since it uses as much as digits as its factorization.

149253739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6489316.

The product of its digits is 204120, while the sum is 43.

The square root of 149253739 is about 12216.9447489951. The cubic root of 149253739 is about 530.4466852519.

The spelling of 149253739 in words is "one hundred forty-nine million, two hundred fifty-three thousand, seven hundred thirty-nine".