290621049 has 16 divisors (see below), whose sum is σ = 390479232. Its totient is φ = 192261888.

The previous prime is 290621033. The next prime is 290621059. The reversal of 290621049 is 940126092.

It is not a de Polignac number, because 290621049 - 2⁴ = 290621033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (290621059) 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 15 ways as a sum of consecutive naturals, for example, 265347 + ... + 266439.

It is an arithmetic number, because the mean of its divisors is an integer number (24404952).

Almost surely, 2^290621049 is an apocalyptic number.

It is an amenable number.

290621049 is a deficient number, since it is larger than the sum of its proper divisors (99858183).

290621049 is a wasteful number, since it uses less digits than its factorization.

290621049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 290621049 is about 17047.6112402882. The cubic root of 290621049 is about 662.3827624040.

The spelling of 290621049 in words is "two hundred ninety million, six hundred twenty-one thousand, forty-nine".