149010409 has 4 divisors (see below), whose sum is σ = 150457216. Its totient is φ = 147563604.

The previous prime is 149010403. The next prime is 149010431. The reversal of 149010409 is 904010941.

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: 904010941 = 4217 ⋅214373.

It is a cyclic number.

It is not a de Polignac number, because 149010409 - 2⁹ = 149009897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149010403) 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, 723249 + ... + 723454.

It is an arithmetic number, because the mean of its divisors is an integer number (37614304).

Almost surely, 2^149010409 is an apocalyptic number.

It is an amenable number.

149010409 is a deficient number, since it is larger than the sum of its proper divisors (1446807).

149010409 is a wasteful number, since it uses less digits than its factorization.

149010409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446806.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 149010409 is about 12206.9819775406. The cubic root of 149010409 is about 530.1582641159.

The spelling of 149010409 in words is "one hundred forty-nine million, ten thousand, four hundred nine".