149869915 has 8 divisors (see below), whose sum is σ = 193678128. Its totient is φ = 110673120.

The previous prime is 149869879. The next prime is 149869919. The reversal of 149869915 is 519968941.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149869915 - 2¹¹ = 149867867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149869919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1152781 + ... + 1152910.

It is an arithmetic number, because the mean of its divisors is an integer number (24209766).

Almost surely, 2^149869915 is an apocalyptic number.

149869915 is a deficient number, since it is larger than the sum of its proper divisors (43808213).

149869915 is a wasteful number, since it uses less digits than its factorization.

149869915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305709.

The product of its digits is 699840, while the sum is 52.

The square root of 149869915 is about 12242.1368641263. The cubic root of 149869915 is about 531.1756446800.

The spelling of 149869915 in words is "one hundred forty-nine million, eight hundred sixty-nine thousand, nine hundred fifteen".