149798417 has 4 divisors (see below), whose sum is σ = 154630656. Its totient is φ = 144966180.

The previous prime is 149798393. The next prime is 149798423. The reversal of 149798417 is 714897941.

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 149798417 - 2¹⁰ = 149797393 is a prime.

It is a super-3 number, since 3×149798417³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149798497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2416073 + ... + 2416134.

It is an arithmetic number, because the mean of its divisors is an integer number (38657664).

Almost surely, 2^149798417 is an apocalyptic number.

It is an amenable number.

149798417 is a deficient number, since it is larger than the sum of its proper divisors (4832239).

149798417 is an equidigital number, since it uses as much as digits as its factorization.

149798417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4832238.

The product of its digits is 508032, while the sum is 50.

The square root of 149798417 is about 12239.2163556332. The cubic root of 149798417 is about 531.0911624426.

The spelling of 149798417 in words is "one hundred forty-nine million, seven hundred ninety-eight thousand, four hundred seventeen".