149859409 has 8 divisors (see below), whose sum is σ = 171377408. Its totient is φ = 128368800.

The previous prime is 149859401. The next prime is 149859427. The reversal of 149859409 is 904958941.

It is a happy number.

149859409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149859409 - 2³ = 149859401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149859401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6664 + ... + 18550.

It is an arithmetic number, because the mean of its divisors is an integer number (21422176).

Almost surely, 2^149859409 is an apocalyptic number.

It is an amenable number.

149859409 is a deficient number, since it is larger than the sum of its proper divisors (21517999).

149859409 is a wasteful number, since it uses less digits than its factorization.

149859409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13695.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 149859409 is about 12241.7077648505. The cubic root of 149859409 is about 531.1632324452.

The spelling of 149859409 in words is "one hundred forty-nine million, eight hundred fifty-nine thousand, four hundred nine".