149194489 has 2 divisors, whose sum is σ = 149194490. Its totient is φ = 149194488.

The previous prime is 149194483. The next prime is 149194511. The reversal of 149194489 is 984491941.

149194489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139428864 + 9765625 = 11808^2 + 3125^2 .

It is an emirp because it is prime and its reverse (984491941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149194489 - 2³ = 149194481 is a prime.

It is a super-2 number, since 2×149194489² = 44517991095942242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (149194481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74597244 + 74597245.

It is an arithmetic number, because the mean of its divisors is an integer number (74597245).

Almost surely, 2^149194489 is an apocalyptic number.

It is an amenable number.

149194489 is a deficient number, since it is larger than the sum of its proper divisors (1).

149194489 is an equidigital number, since it uses as much as digits as its factorization.

149194489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 49.

The square root of 149194489 is about 12214.5195975937. The cubic root of 149194489 is about 530.3764846078.

The spelling of 149194489 in words is "one hundred forty-nine million, one hundred ninety-four thousand, four hundred eighty-nine".