290872213993 has 8 divisors (see below), whose sum is σ = 304370110728. Its totient is φ = 277670974464.

The previous prime is 290872213987. The next prime is 290872213997. The reversal of 290872213993 is 399312278092.

It can be written as a sum of positive squares in 4 ways, for example, as 134493093289 + 156379120704 = 366733^2 + 395448^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 290872213993 - 2⁹ = 290872213481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290872213997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74162296 + ... + 74166217.

It is an arithmetic number, because the mean of its divisors is an integer number (38046263841).

Almost surely, 2^290872213993 is an apocalyptic number.

It is an amenable number.

290872213993 is a deficient number, since it is larger than the sum of its proper divisors (13497896735).

290872213993 is a wasteful number, since it uses less digits than its factorization.

290872213993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148328603.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 290872213993 in words is "two hundred ninety billion, eight hundred seventy-two million, two hundred thirteen thousand, nine hundred ninety-three".