149085649 has 2 divisors, whose sum is σ = 149085650. Its totient is φ = 149085648.

The previous prime is 149085619. The next prime is 149085683. The reversal of 149085649 is 946580941.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108826624 + 40259025 = 10432^2 + 6345^2 .

It is a cyclic number.

It is not a de Polignac number, because 149085649 - 2⁹ = 149085137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149085599 and 149085608.

It is not a weakly prime, because it can be changed into another prime (149085619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74542824 + 74542825.

It is an arithmetic number, because the mean of its divisors is an integer number (74542825).

Almost surely, 2^149085649 is an apocalyptic number.

It is an amenable number.

149085649 is a deficient number, since it is larger than the sum of its proper divisors (1).

149085649 is an equidigital number, since it uses as much as digits as its factorization.

149085649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 149085649 is about 12210.0634314487. The cubic root of 149085649 is about 530.2474802456.

The spelling of 149085649 in words is "one hundred forty-nine million, eighty-five thousand, six hundred forty-nine".