149629897 has 2 divisors, whose sum is σ = 149629898. Its totient is φ = 149629896.

The previous prime is 149629867. The next prime is 149629913. The reversal of 149629897 is 798926941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128799801 + 20830096 = 11349^2 + 4564^2 .

It is a cyclic number.

It is not a de Polignac number, because 149629897 - 2²⁷ = 15412169 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149629867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74814948 + 74814949.

It is an arithmetic number, because the mean of its divisors is an integer number (74814949).

Almost surely, 2^149629897 is an apocalyptic number.

It is an amenable number.

149629897 is a deficient number, since it is larger than the sum of its proper divisors (1).

149629897 is an equidigital number, since it uses as much as digits as its factorization.

149629897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 55.

The square root of 149629897 is about 12232.3299906436. The cubic root of 149629897 is about 530.8919323325.

The spelling of 149629897 in words is "one hundred forty-nine million, six hundred twenty-nine thousand, eight hundred ninety-seven".