290990471 has 4 divisors (see below), whose sum is σ = 291273744. Its totient is φ = 290707200.

The previous prime is 290990449. The next prime is 290990477. The reversal of 290990471 is 174099092.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 290990471 - 2¹⁸ = 290728327 is a prime.

It is a super-3 number, since 3×290990471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290990477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140090 + ... + 142151.

It is an arithmetic number, because the mean of its divisors is an integer number (72818436).

Almost surely, 2^290990471 is an apocalyptic number.

290990471 is a deficient number, since it is larger than the sum of its proper divisors (283273).

290990471 is a wasteful number, since it uses less digits than its factorization.

290990471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283272.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 290990471 is about 17058.4428070091. The cubic root of 290990471 is about 662.6633054642.

The spelling of 290990471 in words is "two hundred ninety million, nine hundred ninety thousand, four hundred seventy-one".