149947957 has 2 divisors, whose sum is σ = 149947958. Its totient is φ = 149947956.

The previous prime is 149947901. The next prime is 149947979. The reversal of 149947957 is 759749941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88623396 + 61324561 = 9414^2 + 7831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149947957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149947898 and 149947907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149947997) 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, 74973978 + 74973979.

It is an arithmetic number, because the mean of its divisors is an integer number (74973979).

Almost surely, 2^149947957 is an apocalyptic number.

It is an amenable number.

149947957 is a deficient number, since it is larger than the sum of its proper divisors (1).

149947957 is an equidigital number, since it uses as much as digits as its factorization.

149947957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 55.

The square root of 149947957 is about 12245.3238830175. The cubic root of 149947957 is about 531.2678286612.

The spelling of 149947957 in words is "one hundred forty-nine million, nine hundred forty-seven thousand, nine hundred fifty-seven".