149209894 has 8 divisors (see below), whose sum is σ = 224666640. Its totient is φ = 74321016.

The previous prime is 149209877. The next prime is 149209903. The reversal of 149209894 is 498902941.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141309 + ... + 142360.

It is an arithmetic number, because the mean of its divisors is an integer number (28083330).

Almost surely, 2^149209894 is an apocalyptic number.

149209894 is a deficient number, since it is larger than the sum of its proper divisors (75456746).

149209894 is a wasteful number, since it uses less digits than its factorization.

149209894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283934.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 149209894 is about 12215.1501832765. The cubic root of 149209894 is about 530.3947385630.

The spelling of 149209894 in words is "one hundred forty-nine million, two hundred nine thousand, eight hundred ninety-four".