149189087 has 4 divisors (see below), whose sum is σ = 149213616. Its totient is φ = 149164560.

The previous prime is 149189077. The next prime is 149189107. The reversal of 149189087 is 780981941.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 149189087 - 2⁴ = 149189071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149189077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4478 + ... + 17844.

It is an arithmetic number, because the mean of its divisors is an integer number (37303404).

Almost surely, 2^149189087 is an apocalyptic number.

149189087 is a deficient number, since it is larger than the sum of its proper divisors (24529).

149189087 is a wasteful number, since it uses less digits than its factorization.

149189087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24528.

The product of its (nonzero) digits is 145152, while the sum is 47.

The square root of 149189087 is about 12214.2984653233. The cubic root of 149189087 is about 530.3700832803.

The spelling of 149189087 in words is "one hundred forty-nine million, one hundred eighty-nine thousand, eighty-seven".