290149388 has 12 divisors (see below), whose sum is σ = 508113312. Its totient is φ = 144974160.

The previous prime is 290149351. The next prime is 290149397. The reversal of 290149388 is 883941092.

It is a happy number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 18443 + ... + 30338.

It is an arithmetic number, because the mean of its divisors is an integer number (42342776).

Almost surely, 2^290149388 is an apocalyptic number.

It is an amenable number.

290149388 is a deficient number, since it is larger than the sum of its proper divisors (217963924).

290149388 is a wasteful number, since it uses less digits than its factorization.

290149388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50272 (or 50270 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 290149388 is about 17033.7719839148. The cubic root of 290149388 is about 662.0242321886.

The spelling of 290149388 in words is "two hundred ninety million, one hundred forty-nine thousand, three hundred eighty-eight".