149039213 has 4 divisors (see below), whose sum is σ = 149953728. Its totient is φ = 148124700.

The previous prime is 149039197. The next prime is 149039243. The reversal of 149039213 is 312930941.

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, and also an emirpimes, since its reverse is a distinct semiprime: 312930941 = 37 ⋅8457593.

It is a cyclic number.

It is not a de Polignac number, because 149039213 - 2⁴ = 149039197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 149039213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149039243) 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, 457013 + ... + 457338.

It is an arithmetic number, because the mean of its divisors is an integer number (37488432).

Almost surely, 2^149039213 is an apocalyptic number.

It is an amenable number.

149039213 is a deficient number, since it is larger than the sum of its proper divisors (914515).

149039213 is an equidigital number, since it uses as much as digits as its factorization.

149039213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914514.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 149039213 is about 12208.1617371331. The cubic root of 149039213 is about 530.1924221207.

The spelling of 149039213 in words is "one hundred forty-nine million, thirty-nine thousand, two hundred thirteen".