149215829 has 12 divisors (see below), whose sum is σ = 176855724. Its totient is φ = 125483904.

The previous prime is 149215819. The next prime is 149215841. The reversal of 149215829 is 928512941.

149215829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 108638929 + 40576900 = 10423^2 + 6370^2 .

It is not a de Polignac number, because 149215829 - 2²⁴ = 132438613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149215819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26132 + ... + 31325.

It is an arithmetic number, because the mean of its divisors is an integer number (14737977).

Almost surely, 2^149215829 is an apocalyptic number.

It is an amenable number.

149215829 is a deficient number, since it is larger than the sum of its proper divisors (27639895).

149215829 is an equidigital number, since it uses as much as digits as its factorization.

149215829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57524 (or 57517 counting only the distinct ones).

The product of its digits is 51840, while the sum is 41.

The square root of 149215829 is about 12215.3931168833. The cubic root of 149215829 is about 530.4017708291.

The spelling of 149215829 in words is "one hundred forty-nine million, two hundred fifteen thousand, eight hundred twenty-nine".