149993673 has 4 divisors (see below), whose sum is σ = 199991568. Its totient is φ = 99995780.

The previous prime is 149993653. The next prime is 149993707. The reversal of 149993673 is 376399941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149993673 - 2⁶ = 149993609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149993653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24998943 + ... + 24998948.

It is an arithmetic number, because the mean of its divisors is an integer number (49997892).

Almost surely, 2^149993673 is an apocalyptic number.

It is an amenable number.

149993673 is a deficient number, since it is larger than the sum of its proper divisors (49997895).

149993673 is an equidigital number, since it uses as much as digits as its factorization.

149993673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49997894.

The product of its digits is 1102248, while the sum is 51.

The square root of 149993673 is about 12247.1904124987. The cubic root of 149993673 is about 531.3218139965.

The spelling of 149993673 in words is "one hundred forty-nine million, nine hundred ninety-three thousand, six hundred seventy-three".