149137869 has 16 divisors (see below), whose sum is σ = 210276864. Its totient is φ = 93868800.

The previous prime is 149137763. The next prime is 149137883. The reversal of 149137869 is 968731941.

It is a happy number.

It is not a de Polignac number, because 149137869 - 2¹¹ = 149135821 is a prime.

It is a super-2 number, since 2×149137869² = 44484207939722322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149137369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15744 + ... + 23369.

It is an arithmetic number, because the mean of its divisors is an integer number (13142304).

Almost surely, 2^149137869 is an apocalyptic number.

It is an amenable number.

149137869 is a deficient number, since it is larger than the sum of its proper divisors (61138995).

149137869 is a wasteful number, since it uses less digits than its factorization.

149137869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39188.

The product of its digits is 326592, while the sum is 48.

The square root of 149137869 is about 12212.2016442573. The cubic root of 149137869 is about 530.3093826740.

The spelling of 149137869 in words is "one hundred forty-nine million, one hundred thirty-seven thousand, eight hundred sixty-nine".