149887923 has 8 divisors (see below), whose sum is σ = 204725136. Its totient is φ = 97488000.

The previous prime is 149887909. The next prime is 149887931. The reversal of 149887923 is 329788941.

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

It is not a de Polignac number, because 149887923 - 2⁸ = 149887667 is a prime.

It is a super-2 number, since 2×149887923² = 44932778922507858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149887943) 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, 609178 + ... + 609423.

It is an arithmetic number, because the mean of its divisors is an integer number (25590642).

Almost surely, 2^149887923 is an apocalyptic number.

149887923 is a deficient number, since it is larger than the sum of its proper divisors (54837213).

149887923 is a wasteful number, since it uses less digits than its factorization.

149887923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218645.

The product of its digits is 870912, while the sum is 51.

The square root of 149887923 is about 12242.8723345463. The cubic root of 149887923 is about 531.1969187472.

The spelling of 149887923 in words is "one hundred forty-nine million, eight hundred eighty-seven thousand, nine hundred twenty-three".