290953393 has 2 divisors, whose sum is σ = 290953394. Its totient is φ = 290953392.

The previous prime is 290953387. The next prime is 290953409. The reversal of 290953393 is 393359092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150601984 + 140351409 = 12272^2 + 11847^2 .

It is a cyclic number.

It is not a de Polignac number, because 290953393 - 2¹⁷ = 290822321 is a prime.

It is not a weakly prime, because it can be changed into another prime (290953493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145476696 + 145476697.

It is an arithmetic number, because the mean of its divisors is an integer number (145476697).

Almost surely, 2^290953393 is an apocalyptic number.

It is an amenable number.

290953393 is a deficient number, since it is larger than the sum of its proper divisors (1).

290953393 is an equidigital number, since it uses as much as digits as its factorization.

290953393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196830, while the sum is 43.

The square root of 290953393 is about 17057.3559791663. The cubic root of 290953393 is about 662.6351587536.

The spelling of 290953393 in words is "two hundred ninety million, nine hundred fifty-three thousand, three hundred ninety-three".