149508493 has 2 divisors, whose sum is σ = 149508494. Its totient is φ = 149508492.

The previous prime is 149508451. The next prime is 149508529. The reversal of 149508493 is 394805941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81396484 + 68112009 = 9022^2 + 8253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149508493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149508193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74754246 + 74754247.

It is an arithmetic number, because the mean of its divisors is an integer number (74754247).

Almost surely, 2^149508493 is an apocalyptic number.

It is an amenable number.

149508493 is a deficient number, since it is larger than the sum of its proper divisors (1).

149508493 is an equidigital number, since it uses as much as digits as its factorization.

149508493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 149508493 is about 12227.3665603023. The cubic root of 149508493 is about 530.7483116508.

The spelling of 149508493 in words is "one hundred forty-nine million, five hundred eight thousand, four hundred ninety-three".