149373997 has 2 divisors, whose sum is σ = 149373998. Its totient is φ = 149373996.

The previous prime is 149373907. The next prime is 149374003. The reversal of 149373997 is 799373941.

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., 132572196 + 16801801 = 11514^2 + 4099^2 .

It is a cyclic number.

It is not a de Polignac number, because 149373997 - 2⁷ = 149373869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149373907) 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, 74686998 + 74686999.

It is an arithmetic number, because the mean of its divisors is an integer number (74686999).

Almost surely, 2^149373997 is an apocalyptic number.

It is an amenable number.

149373997 is a deficient number, since it is larger than the sum of its proper divisors (1).

149373997 is an equidigital number, since it uses as much as digits as its factorization.

149373997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1285956, while the sum is 52.

The square root of 149373997 is about 12221.8655286335. The cubic root of 149373997 is about 530.5891123540.

The spelling of 149373997 in words is "one hundred forty-nine million, three hundred seventy-three thousand, nine hundred ninety-seven".