149669417 has 4 divisors (see below), whose sum is σ = 152123076. Its totient is φ = 147215760.

The previous prime is 149669413. The next prime is 149669437. The reversal of 149669417 is 714966941.

149669417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15202201 + 134467216 = 3899^2 + 11596^2 .

It is a cyclic number.

It is not a de Polignac number, because 149669417 - 2² = 149669413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149669413) 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, 1226738 + ... + 1226859.

It is an arithmetic number, because the mean of its divisors is an integer number (38030769).

Almost surely, 2^149669417 is an apocalyptic number.

It is an amenable number.

149669417 is a deficient number, since it is larger than the sum of its proper divisors (2453659).

149669417 is an equidigital number, since it uses as much as digits as its factorization.

149669417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453658.

The product of its digits is 326592, while the sum is 47.

The square root of 149669417 is about 12233.9452753394. The cubic root of 149669417 is about 530.9386676501.

The spelling of 149669417 in words is "one hundred forty-nine million, six hundred sixty-nine thousand, four hundred seventeen".