149415449 has 4 divisors (see below), whose sum is σ = 157279440. Its totient is φ = 141551460.

The previous prime is 149415437. The next prime is 149415463. The reversal of 149415449 is 944514941.

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, and also an emirpimes, since its reverse is a distinct semiprime: 944514941 = 23 ⋅41065867.

It is a cyclic number.

It is not a de Polignac number, because 149415449 - 2⁴ = 149415433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149415419) 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, 3931967 + ... + 3932004.

It is an arithmetic number, because the mean of its divisors is an integer number (39319860).

Almost surely, 2^149415449 is an apocalyptic number.

149415449 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

149415449 is a deficient number, since it is larger than the sum of its proper divisors (7863991).

149415449 is an equidigital number, since it uses as much as digits as its factorization.

149415449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7863990.

The product of its digits is 103680, while the sum is 41.

The square root of 149415449 is about 12223.5612241278. The cubic root of 149415449 is about 530.6381881551.

The spelling of 149415449 in words is "one hundred forty-nine million, four hundred fifteen thousand, four hundred forty-nine".