290085139 has 2 divisors, whose sum is σ = 290085140. Its totient is φ = 290085138.

The previous prime is 290085113. The next prime is 290085149. The reversal of 290085139 is 931580092.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 290085139 - 2¹³ = 290076947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 290085098 and 290085107.

It is not a weakly prime, because it can be changed into another prime (290085109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145042569 + 145042570.

It is an arithmetic number, because the mean of its divisors is an integer number (145042570).

Almost surely, 2^290085139 is an apocalyptic number.

290085139 is a deficient number, since it is larger than the sum of its proper divisors (1).

290085139 is an equidigital number, since it uses as much as digits as its factorization.

290085139 is an evil number, because the sum of its binary digits is even.

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

The square root of 290085139 is about 17031.8859495947. The cubic root of 290085139 is about 661.9753636442.

The spelling of 290085139 in words is "two hundred ninety million, eighty-five thousand, one hundred thirty-nine".