149256449 has 2 divisors, whose sum is σ = 149256450. Its totient is φ = 149256448.

The previous prime is 149256421. The next prime is 149256451. The reversal of 149256449 is 944652941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79834225 + 69422224 = 8935^2 + 8332^2 .

It is a cyclic number.

It is not a de Polignac number, because 149256449 - 2⁸ = 149256193 is a prime.

Together with 149256451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149259449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74628224 + 74628225.

It is an arithmetic number, because the mean of its divisors is an integer number (74628225).

Almost surely, 2^149256449 is an apocalyptic number.

It is an amenable number.

149256449 is a deficient number, since it is larger than the sum of its proper divisors (1).

149256449 is an equidigital number, since it uses as much as digits as its factorization.

149256449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 44.

The square root of 149256449 is about 12217.0556600189. The cubic root of 149256449 is about 530.4498956725.

The spelling of 149256449 in words is "one hundred forty-nine million, two hundred fifty-six thousand, four hundred forty-nine".