149986090 has 16 divisors (see below), whose sum is σ = 271377288. Its totient is φ = 59682816.

The previous prime is 149986079. The next prime is 149986097. The reversal of 149986090 is 90689941.

It can be written as a sum of positive squares in 4 ways, for example, as 101586241 + 48399849 = 10079^2 + 6957^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 149986090.

It is not an unprimeable number, because it can be changed into a prime (149986097) 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 in 7 ways as a sum of consecutive naturals, for example, 36927 + ... + 40786.

Almost surely, 2^149986090 is an apocalyptic number.

149986090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149986090 is a deficient number, since it is larger than the sum of its proper divisors (121391198).

149986090 is a wasteful number, since it uses less digits than its factorization.

149986090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77913.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 149986090 is about 12246.8808273780. The cubic root of 149986090 is about 531.3128601050.

The spelling of 149986090 in words is "one hundred forty-nine million, nine hundred eighty-six thousand, ninety".