149504897 has 2 divisors, whose sum is σ = 149504898. Its totient is φ = 149504896.

The previous prime is 149504869. The next prime is 149504911. The reversal of 149504897 is 798405941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142301041 + 7203856 = 11929^2 + 2684^2 .

It is an emirp because it is prime and its reverse (798405941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149504897 - 2¹⁶ = 149439361 is a prime.

It is not a weakly prime, because it can be changed into another prime (149504837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74752448 + 74752449.

It is an arithmetic number, because the mean of its divisors is an integer number (74752449).

Almost surely, 2^149504897 is an apocalyptic number.

It is an amenable number.

149504897 is a deficient number, since it is larger than the sum of its proper divisors (1).

149504897 is an equidigital number, since it uses as much as digits as its factorization.

149504897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 149504897 is about 12227.2195122194. The cubic root of 149504897 is about 530.7440564049.

The spelling of 149504897 in words is "one hundred forty-nine million, five hundred four thousand, eight hundred ninety-seven".