290047950721 has 3 divisors (see below), whose sum is σ = 290048489283. Its totient is φ = 290047412160.

The previous prime is 290047950707. The next prime is 290047950733. The reversal of 290047950721 is 127059740092.

It is a happy number.

The square root of 290047950721 is 538561.

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 can be written as a sum of positive squares in only one way, i.e., 15052590721 + 274995360000 = 122689^2 + 524400^2 .

It is not a de Polignac number, because 290047950721 - 2²¹ = 290045853569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290047950781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 269281 + ... + 807841.

It is an arithmetic number, because the mean of its divisors is an integer number (96682829761).

Almost surely, 2^290047950721 is an apocalyptic number.

290047950721 is the 538561-st square number.

290047950721 is the 269281-st centered octagonal number.

It is an amenable number.

290047950721 is a deficient number, since it is larger than the sum of its proper divisors (538562).

290047950721 is an frugal number, since it uses more digits than its factorization.

290047950721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077122 (or 538561 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 290047950721 in words is "two hundred ninety billion, forty-seven million, nine hundred fifty thousand, seven hundred twenty-one".