149913223 has 2 divisors, whose sum is σ = 149913224. Its totient is φ = 149913222.

The previous prime is 149913199. The next prime is 149913227. The reversal of 149913223 is 322319941.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149913223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149913227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74956611 + 74956612.

It is an arithmetic number, because the mean of its divisors is an integer number (74956612).

Almost surely, 2^149913223 is an apocalyptic number.

149913223 is a deficient number, since it is larger than the sum of its proper divisors (1).

149913223 is an equidigital number, since it uses as much as digits as its factorization.

149913223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 149913223 is about 12243.9055452090. The cubic root of 149913223 is about 531.2268044682.

The spelling of 149913223 in words is "one hundred forty-nine million, nine hundred thirteen thousand, two hundred twenty-three".