290983381 has 8 divisors (see below), whose sum is σ = 314960184. Its totient is φ = 267234240.

The previous prime is 290983369. The next prime is 290983387. The reversal of 290983381 is 183389092.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 70728100 + 220255281 = 8410^2 + 14841^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 290983381 - 2¹³ = 290975189 is a prime.

It is a super-2 number, since 2×290983381² = 169342656036382322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290983387) 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, 54250 + ... + 59371.

It is an arithmetic number, because the mean of its divisors is an integer number (39370023).

Almost surely, 2^290983381 is an apocalyptic number.

It is an amenable number.

290983381 is a deficient number, since it is larger than the sum of its proper divisors (23976803).

290983381 is a wasteful number, since it uses less digits than its factorization.

290983381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113831.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 290983381 is about 17058.2349907603. The cubic root of 290983381 is about 662.6579234769.

The spelling of 290983381 in words is "two hundred ninety million, nine hundred eighty-three thousand, three hundred eighty-one".