149490417 has 4 divisors (see below), whose sum is σ = 199320560. Its totient is φ = 99660276.

The previous prime is 149490371. The next prime is 149490421. The reversal of 149490417 is 714094941.

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 not a de Polignac number, because 149490417 - 2²² = 145296113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149490017) 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, 24915067 + ... + 24915072.

It is an arithmetic number, because the mean of its divisors is an integer number (49830140).

Almost surely, 2^149490417 is an apocalyptic number.

It is an amenable number.

149490417 is a deficient number, since it is larger than the sum of its proper divisors (49830143).

149490417 is an equidigital number, since it uses as much as digits as its factorization.

149490417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49830142.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 149490417 is about 12226.6273763454. The cubic root of 149490417 is about 530.7269211310.

The spelling of 149490417 in words is "one hundred forty-nine million, four hundred ninety thousand, four hundred seventeen".