149503447 has 2 divisors, whose sum is σ = 149503448. Its totient is φ = 149503446.

The previous prime is 149503441. The next prime is 149503499. The reversal of 149503447 is 744305941.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149503447 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149503441) 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, 74751723 + 74751724.

It is an arithmetic number, because the mean of its divisors is an integer number (74751724).

Almost surely, 2^149503447 is an apocalyptic number.

149503447 is a deficient number, since it is larger than the sum of its proper divisors (1).

149503447 is an equidigital number, since it uses as much as digits as its factorization.

149503447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 149503447 is about 12227.1602181373. The cubic root of 149503447 is about 530.7423405606.

The spelling of 149503447 in words is "one hundred forty-nine million, five hundred three thousand, four hundred forty-seven".