290049538 has 4 divisors (see below), whose sum is σ = 435074310. Its totient is φ = 145024768.

The previous prime is 290049523. The next prime is 290049541. The reversal of 290049538 is 835940092.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 259435449 + 30614089 = 16107^2 + 5533^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 290049538.

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 as a sum of consecutive naturals, namely, 72512383 + ... + 72512386.

Almost surely, 2^290049538 is an apocalyptic number.

290049538 is a deficient number, since it is larger than the sum of its proper divisors (145024772).

290049538 is a wasteful number, since it uses less digits than its factorization.

290049538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145024771.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 290049538 is about 17030.8407895794. The cubic root of 290049538 is about 661.9482819982.

The spelling of 290049538 in words is "two hundred ninety million, forty-nine thousand, five hundred thirty-eight".