290850139 has 2 divisors, whose sum is σ = 290850140. Its totient is φ = 290850138.

The previous prime is 290850101. The next prime is 290850143. The reversal of 290850139 is 931058092.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 290850139 - 2⁹ = 290849627 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 290850098 and 290850107.

It is not a weakly prime, because it can be changed into another prime (290850169) 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 as a sum of consecutive naturals, namely, 145425069 + 145425070.

It is an arithmetic number, because the mean of its divisors is an integer number (145425070).

Almost surely, 2^290850139 is an apocalyptic number.

290850139 is a deficient number, since it is larger than the sum of its proper divisors (1).

290850139 is an equidigital number, since it uses as much as digits as its factorization.

290850139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 290850139 is about 17054.3290398655. The cubic root of 290850139 is about 662.5567638084.

The spelling of 290850139 in words is "two hundred ninety million, eight hundred fifty thousand, one hundred thirty-nine".