290491084352401 has 3 divisors (see below), whose sum is σ = 290491101396201. Its totient is φ = 290491067308602.

The previous prime is 290491084352393. The next prime is 290491084352407. The reversal of 290491084352401 is 104253480194092.

The square root of 290491084352401 is 17043799.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 290491084352401 - 2³ = 290491084352393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290491084352407) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8521900 + ... + 25565698.

It is an arithmetic number, because the mean of its divisors is an integer number (96830367132067).

Almost surely, 2^{290491084352401} is an apocalyptic number.

290491084352401 is the 17043799-th square number.

290491084352401 is the 8521900-th centered octagonal number.

It is an amenable number.

290491084352401 is a deficient number, since it is larger than the sum of its proper divisors (17043800).

290491084352401 is an frugal number, since it uses more digits than its factorization.

290491084352401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34087598 (or 17043799 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 290491084352401 in words is "two hundred ninety trillion, four hundred ninety-one billion, eighty-four million, three hundred fifty-two thousand, four hundred one".