149499599 has 2 divisors, whose sum is σ = 149499600. Its totient is φ = 149499598.

The previous prime is 149499551. The next prime is 149499613. The reversal of 149499599 is 995994941.

It is a strong prime.

It is an emirp because it is prime and its reverse (995994941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149499599 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149499799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74749799 + 74749800.

It is an arithmetic number, because the mean of its divisors is an integer number (74749800).

Almost surely, 2^149499599 is an apocalyptic number.

149499599 is a deficient number, since it is larger than the sum of its proper divisors (1).

149499599 is an equidigital number, since it uses as much as digits as its factorization.

149499599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4723920, while the sum is 59.

The square root of 149499599 is about 12227.0028625170. The cubic root of 149499599 is about 530.7377870111.

The spelling of 149499599 in words is "one hundred forty-nine million, four hundred ninety-nine thousand, five hundred ninety-nine".