149022647 has 2 divisors, whose sum is σ = 149022648. Its totient is φ = 149022646.

The previous prime is 149022637. The next prime is 149022661. The reversal of 149022647 is 746220941.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149022647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149022607) 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, 74511323 + 74511324.

It is an arithmetic number, because the mean of its divisors is an integer number (74511324).

Almost surely, 2^149022647 is an apocalyptic number.

149022647 is a deficient number, since it is larger than the sum of its proper divisors (1).

149022647 is an equidigital number, since it uses as much as digits as its factorization.

149022647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 149022647 is about 12207.4832377522. The cubic root of 149022647 is about 530.1727774179.

The spelling of 149022647 in words is "one hundred forty-nine million, twenty-two thousand, six hundred forty-seven".