290120407 has 2 divisors, whose sum is σ = 290120408. Its totient is φ = 290120406.

The previous prime is 290120401. The next prime is 290120431. The reversal of 290120407 is 704021092.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 290120407 - 2⁷ = 290120279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (290120401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145060203 + 145060204.

It is an arithmetic number, because the mean of its divisors is an integer number (145060204).

Almost surely, 2^290120407 is an apocalyptic number.

290120407 is a deficient number, since it is larger than the sum of its proper divisors (1).

290120407 is an equidigital number, since it uses as much as digits as its factorization.

290120407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 290120407 is about 17032.9212702930. The cubic root of 290120407 is about 662.0021897927.

Adding to 290120407 its reverse (704021092), we get a palindrome (994141499).

The spelling of 290120407 in words is "two hundred ninety million, one hundred twenty thousand, four hundred seven".