149857207 has 2 divisors, whose sum is σ = 149857208. Its totient is φ = 149857206.

The previous prime is 149857187. The next prime is 149857217. The reversal of 149857207 is 702758941.

It is a strong prime.

It is an emirp because it is prime and its reverse (702758941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149857207 - 2²³ = 141468599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149857217) 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, 74928603 + 74928604.

It is an arithmetic number, because the mean of its divisors is an integer number (74928604).

Almost surely, 2^149857207 is an apocalyptic number.

149857207 is a deficient number, since it is larger than the sum of its proper divisors (1).

149857207 is an equidigital number, since it uses as much as digits as its factorization.

149857207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 149857207 is about 12241.6178260882. The cubic root of 149857207 is about 531.1606308353.

The spelling of 149857207 in words is "one hundred forty-nine million, eight hundred fifty-seven thousand, two hundred seven".