149554949 has 2 divisors, whose sum is σ = 149554950. Its totient is φ = 149554948.

The previous prime is 149554939. The next prime is 149554957. The reversal of 149554949 is 949455941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147452449 + 2102500 = 12143^2 + 1450^2 .

It is a cyclic number.

It is not a de Polignac number, because 149554949 - 2⁸ = 149554693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149554897 and 149554906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149554919) 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, 74777474 + 74777475.

It is an arithmetic number, because the mean of its divisors is an integer number (74777475).

Almost surely, 2^149554949 is an apocalyptic number.

It is an amenable number.

149554949 is a deficient number, since it is larger than the sum of its proper divisors (1).

149554949 is an equidigital number, since it uses as much as digits as its factorization.

149554949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 50.

The square root of 149554949 is about 12229.2660859105. The cubic root of 149554949 is about 530.8032781831.

The spelling of 149554949 in words is "one hundred forty-nine million, five hundred fifty-four thousand, nine hundred forty-nine".