149247047 has 2 divisors, whose sum is σ = 149247048. Its totient is φ = 149247046.

The previous prime is 149247019. The next prime is 149247061. The reversal of 149247047 is 740742941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149247047 - 2¹⁰ = 149246023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149247047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149247067) 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, 74623523 + 74623524.

It is an arithmetic number, because the mean of its divisors is an integer number (74623524).

Almost surely, 2^149247047 is an apocalyptic number.

149247047 is a deficient number, since it is larger than the sum of its proper divisors (1).

149247047 is an equidigital number, since it uses as much as digits as its factorization.

149247047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 149247047 is about 12216.6708640284. The cubic root of 149247047 is about 530.4387573606.

Adding to 149247047 its reverse (740742941), we get a palindrome (889989988).

It can be divided in two parts, 1492470 and 47, that multiplied together give a triangular number (70146090 = T₁₁₈₄₄).

The spelling of 149247047 in words is "one hundred forty-nine million, two hundred forty-seven thousand, forty-seven".