149189393 has 8 divisors (see below), whose sum is σ = 150279168. Its totient is φ = 148104144.

The previous prime is 149189377. The next prime is 149189441. The reversal of 149189393 is 393981941.

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

It is a cyclic number.

It is not a de Polignac number, because 149189393 - 2⁴ = 149189377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149189323) 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, 88880 + ... + 90542.

It is an arithmetic number, because the mean of its divisors is an integer number (18784896).

Almost surely, 2^149189393 is an apocalyptic number.

It is an amenable number.

149189393 is a deficient number, since it is larger than the sum of its proper divisors (1089775).

149189393 is a wasteful number, since it uses less digits than its factorization.

149189393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263.

The product of its digits is 209952, while the sum is 47.

The square root of 149189393 is about 12214.3109916196. The cubic root of 149189393 is about 530.3704458920.

The spelling of 149189393 in words is "one hundred forty-nine million, one hundred eighty-nine thousand, three hundred ninety-three".