149584991 has 2 divisors, whose sum is σ = 149584992. Its totient is φ = 149584990.

The previous prime is 149584949. The next prime is 149585017. The reversal of 149584991 is 199485941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149584991 - 2⁶ = 149584927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149584901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74792495 + 74792496.

It is an arithmetic number, because the mean of its divisors is an integer number (74792496).

Almost surely, 2^149584991 is an apocalyptic number.

149584991 is a deficient number, since it is larger than the sum of its proper divisors (1).

149584991 is an equidigital number, since it uses as much as digits as its factorization.

149584991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 50.

The square root of 149584991 is about 12230.4943072633. The cubic root of 149584991 is about 530.8388176834.

The spelling of 149584991 in words is "one hundred forty-nine million, five hundred eighty-four thousand, nine hundred ninety-one".