149381017 has 4 divisors (see below), whose sum is σ = 149439616. Its totient is φ = 149322420.

The previous prime is 149380949. The next prime is 149381039. The reversal of 149381017 is 710183941.

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 149381017 - 2²⁷ = 15163289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149381077) 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 3 ways as a sum of consecutive naturals, for example, 25293 + ... + 30634.

It is an arithmetic number, because the mean of its divisors is an integer number (37359904).

Almost surely, 2^149381017 is an apocalyptic number.

It is an amenable number.

149381017 is a deficient number, since it is larger than the sum of its proper divisors (58599).

149381017 is an equidigital number, since it uses as much as digits as its factorization.

149381017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58598.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 149381017 is about 12222.1527154589. The cubic root of 149381017 is about 530.5974241023.

The spelling of 149381017 in words is "one hundred forty-nine million, three hundred eighty-one thousand, seventeen".