149548499 has 2 divisors, whose sum is σ = 149548500. Its totient is φ = 149548498.

The previous prime is 149548471. The next prime is 149548513. The reversal of 149548499 is 994845941.

It is a strong prime.

It is an emirp because it is prime and its reverse (994845941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149548499 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149548499.

It is not a weakly prime, because it can be changed into another prime (149548409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74774249 + 74774250.

It is an arithmetic number, because the mean of its divisors is an integer number (74774250).

Almost surely, 2^149548499 is an apocalyptic number.

149548499 is a deficient number, since it is larger than the sum of its proper divisors (1).

149548499 is an equidigital number, since it uses as much as digits as its factorization.

149548499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 53.

The square root of 149548499 is about 12229.0023714120. The cubic root of 149548499 is about 530.7956472524.

It can be divided in two parts, 1495 and 48499, that added together give a palindrome (49994).

The spelling of 149548499 in words is "one hundred forty-nine million, five hundred forty-eight thousand, four hundred ninety-nine".