149570669 has 2 divisors, whose sum is σ = 149570670. Its totient is φ = 149570668.

The previous prime is 149570627. The next prime is 149570671. The reversal of 149570669 is 966075941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129095044 + 20475625 = 11362^2 + 4525^2 .

It is a cyclic number.

It is not a de Polignac number, because 149570669 - 2¹⁶ = 149505133 is a prime.

It is a super-2 number, since 2×149570669² = 44742770050215122, which contains 22 as substring.

Together with 149570671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149570609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74785334 + 74785335.

It is an arithmetic number, because the mean of its divisors is an integer number (74785335).

Almost surely, 2^149570669 is an apocalyptic number.

It is an amenable number.

149570669 is a deficient number, since it is larger than the sum of its proper divisors (1).

149570669 is an equidigital number, since it uses as much as digits as its factorization.

149570669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 149570669 is about 12229.9087895209. The cubic root of 149570669 is about 530.8218754395.

The spelling of 149570669 in words is "one hundred forty-nine million, five hundred seventy thousand, six hundred sixty-nine".