149217727 has 2 divisors, whose sum is σ = 149217728. Its totient is φ = 149217726.

The previous prime is 149217671. The next prime is 149217763. The reversal of 149217727 is 727712941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149217727 - 2¹⁹ = 148693439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149217727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149217427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74608863 + 74608864.

It is an arithmetic number, because the mean of its divisors is an integer number (74608864).

Almost surely, 2^149217727 is an apocalyptic number.

149217727 is a deficient number, since it is larger than the sum of its proper divisors (1).

149217727 is an equidigital number, since it uses as much as digits as its factorization.

149217727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49392, while the sum is 40.

The square root of 149217727 is about 12215.4708054991. The cubic root of 149217727 is about 530.4040196930.

The spelling of 149217727 in words is "one hundred forty-nine million, two hundred seventeen thousand, seven hundred twenty-seven".