149866247 has 2 divisors, whose sum is σ = 149866248. Its totient is φ = 149866246.

The previous prime is 149866219. The next prime is 149866253. The reversal of 149866247 is 742668941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149866247 - 2¹² = 149862151 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 (149866207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74933123 + 74933124.

It is an arithmetic number, because the mean of its divisors is an integer number (74933124).

Almost surely, 2^149866247 is an apocalyptic number.

149866247 is a deficient number, since it is larger than the sum of its proper divisors (1).

149866247 is an equidigital number, since it uses as much as digits as its factorization.

149866247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 47.

The square root of 149866247 is about 12241.9870527623. The cubic root of 149866247 is about 531.1713112149.

The spelling of 149866247 in words is "one hundred forty-nine million, eight hundred sixty-six thousand, two hundred forty-seven".