149711899 has 4 divisors (see below), whose sum is σ = 156221136. Its totient is φ = 143202664.

The previous prime is 149711893. The next prime is 149711917. The reversal of 149711899 is 998117941.

149711899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149711899 - 2¹¹ = 149709851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149711893) 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, 3254584 + ... + 3254629.

It is an arithmetic number, because the mean of its divisors is an integer number (39055284).

Almost surely, 2^149711899 is an apocalyptic number.

149711899 is a deficient number, since it is larger than the sum of its proper divisors (6509237).

149711899 is an equidigital number, since it uses as much as digits as its factorization.

149711899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6509236.

The product of its digits is 163296, while the sum is 49.

The square root of 149711899 is about 12235.6813868293. The cubic root of 149711899 is about 530.9888965774.

The spelling of 149711899 in words is "one hundred forty-nine million, seven hundred eleven thousand, eight hundred ninety-nine".