290214891 has 6 divisors (see below), whose sum is σ = 419199300. Its totient is φ = 193476588.

The previous prime is 290214887. The next prime is 290214893. The reversal of 290214891 is 198412092.

It is not a de Polignac number, because 290214891 - 2² = 290214887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (290214893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16123041 + ... + 16123058.

It is an arithmetic number, because the mean of its divisors is an integer number (69866550).

Almost surely, 2^290214891 is an apocalyptic number.

290214891 is a deficient number, since it is larger than the sum of its proper divisors (128984409).

290214891 is a wasteful number, since it uses less digits than its factorization.

290214891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32246105 (or 32246102 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 290214891 is about 17035.6946145439. The cubic root of 290214891 is about 662.0740471141.

The spelling of 290214891 in words is "two hundred ninety million, two hundred fourteen thousand, eight hundred ninety-one".