149012709 has 4 divisors (see below), whose sum is σ = 198683616. Its totient is φ = 99341804.

The previous prime is 149012693. The next prime is 149012711. The reversal of 149012709 is 907210941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149012709 - 2⁴ = 149012693 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 149012709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149012719) 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, 24835449 + ... + 24835454.

It is an arithmetic number, because the mean of its divisors is an integer number (49670904).

Almost surely, 2^149012709 is an apocalyptic number.

It is an amenable number.

149012709 is a deficient number, since it is larger than the sum of its proper divisors (49670907).

149012709 is an equidigital number, since it uses as much as digits as its factorization.

149012709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49670906.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 149012709 is about 12207.0761855573. The cubic root of 149012709 is about 530.1609917950.

The spelling of 149012709 in words is "one hundred forty-nine million, twelve thousand, seven hundred nine".