149990433 has 4 divisors (see below), whose sum is σ = 199987248. Its totient is φ = 99993620.

The previous prime is 149990419. The next prime is 149990443. The reversal of 149990433 is 334099941.

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 149990433 - 2⁴ = 149990417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149990413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24998403 + ... + 24998408.

It is an arithmetic number, because the mean of its divisors is an integer number (49996812).

Almost surely, 2^149990433 is an apocalyptic number.

It is an amenable number.

149990433 is a deficient number, since it is larger than the sum of its proper divisors (49996815).

149990433 is an equidigital number, since it uses as much as digits as its factorization.

149990433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49996814.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 149990433 is about 12247.0581365485. The cubic root of 149990433 is about 531.3179882906.

The spelling of 149990433 in words is "one hundred forty-nine million, nine hundred ninety thousand, four hundred thirty-three".