149993389 has 16 divisors (see below), whose sum is σ = 185068800. Its totient is φ = 118379520.

The previous prime is 149993381. The next prime is 149993401. The reversal of 149993389 is 983399941.

It is not a de Polignac number, because 149993389 - 2³ = 149993381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149993381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39024 + ... + 42694.

It is an arithmetic number, because the mean of its divisors is an integer number (11566800).

Almost surely, 2^149993389 is an apocalyptic number.

It is an amenable number.

149993389 is a deficient number, since it is larger than the sum of its proper divisors (35075411).

149993389 is a wasteful number, since it uses less digits than its factorization.

149993389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4140.

The product of its digits is 1889568, while the sum is 55.

The square root of 149993389 is about 12247.1788179972. The cubic root of 149993389 is about 531.3214786591.

The spelling of 149993389 in words is "one hundred forty-nine million, nine hundred ninety-three thousand, three hundred eighty-nine".