149291957 has 2 divisors, whose sum is σ = 149291958. Its totient is φ = 149291956.

The previous prime is 149291921. The next prime is 149291963. The reversal of 149291957 is 759192941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135815716 + 13476241 = 11654^2 + 3671^2 .

It is a cyclic number.

It is not a de Polignac number, because 149291957 - 2²² = 145097653 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149291357) 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, 74645978 + 74645979.

It is an arithmetic number, because the mean of its divisors is an integer number (74645979).

Almost surely, 2^149291957 is an apocalyptic number.

It is an amenable number.

149291957 is a deficient number, since it is larger than the sum of its proper divisors (1).

149291957 is an equidigital number, since it uses as much as digits as its factorization.

149291957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 47.

The square root of 149291957 is about 12218.5087879004. The cubic root of 149291957 is about 530.4919568846.

The spelling of 149291957 in words is "one hundred forty-nine million, two hundred ninety-one thousand, nine hundred fifty-seven".