149466890 has 48 divisors (see below), whose sum is σ = 291270168. Its totient is φ = 55031808.

The previous prime is 149466869. The next prime is 149466893. The reversal of 149466890 is 98664941.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 17147881 + 132319009 = 4141^2 + 11503^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (149466893) 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 23 ways as a sum of consecutive naturals, for example, 477374 + ... + 477686.

Almost surely, 2^149466890 is an apocalyptic number.

149466890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149466890 is a deficient number, since it is larger than the sum of its proper divisors (141803278).

149466890 is a wasteful number, since it uses less digits than its factorization.

149466890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 149466890 is about 12225.6652170751. The cubic root of 149466890 is about 530.6990775015.

The spelling of 149466890 in words is "one hundred forty-nine million, four hundred sixty-six thousand, eight hundred ninety".