149629889 has 4 divisors (see below), whose sum is σ = 152082900. Its totient is φ = 147176880.

The previous prime is 149629867. The next prime is 149629897. The reversal of 149629889 is 988926941.

149629889 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 can be written as a sum of positive squares in 2 ways, for example, as 26863489 + 122766400 = 5183^2 + 11080^2 .

It is a cyclic number.

It is not a de Polignac number, because 149629889 - 2¹² = 149625793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149689889) 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, 1226414 + ... + 1226535.

It is an arithmetic number, because the mean of its divisors is an integer number (38020725).

Almost surely, 2^149629889 is an apocalyptic number.

It is an amenable number.

149629889 is a deficient number, since it is larger than the sum of its proper divisors (2453011).

149629889 is an equidigital number, since it uses as much as digits as its factorization.

149629889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453010.

The product of its digits is 2239488, while the sum is 56.

The square root of 149629889 is about 12232.3296636413. The cubic root of 149629889 is about 530.8919228711.

The spelling of 149629889 in words is "one hundred forty-nine million, six hundred twenty-nine thousand, eight hundred eighty-nine".