290279449 has 2 divisors, whose sum is σ = 290279450. Its totient is φ = 290279448.

The previous prime is 290279383. The next prime is 290279461. The reversal of 290279449 is 944972092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279123849 + 11155600 = 16707^2 + 3340^2 .

It is a cyclic number.

It is not a de Polignac number, because 290279449 - 2¹⁵ = 290246681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 290279399 and 290279408.

It is not a weakly prime, because it can be changed into another prime (290279749) by changing a digit.

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, 145139724 + 145139725.

It is an arithmetic number, because the mean of its divisors is an integer number (145139725).

Almost surely, 2^290279449 is an apocalyptic number.

It is an amenable number.

290279449 is a deficient number, since it is larger than the sum of its proper divisors (1).

290279449 is an equidigital number, since it uses as much as digits as its factorization.

290279449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 290279449 is about 17037.5892954373. The cubic root of 290279449 is about 662.1231360349.

The spelling of 290279449 in words is "two hundred ninety million, two hundred seventy-nine thousand, four hundred forty-nine".