149399387 has 8 divisors (see below), whose sum is σ = 157172400. Its totient is φ = 141801184.

The previous prime is 149399359. The next prime is 149399389. The reversal of 149399387 is 783993941.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-149399387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149399389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41948 + ... + 45369.

It is an arithmetic number, because the mean of its divisors is an integer number (19646550).

Almost surely, 2^149399387 is an apocalyptic number.

149399387 is a deficient number, since it is larger than the sum of its proper divisors (7773013).

149399387 is an equidigital number, since it uses as much as digits as its factorization.

149399387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87405.

The product of its digits is 1469664, while the sum is 53.

The square root of 149399387 is about 12222.9041966302. The cubic root of 149399387 is about 530.6191731290.

The spelling of 149399387 in words is "one hundred forty-nine million, three hundred ninety-nine thousand, three hundred eighty-seven".