290022993 has 24 divisors (see below), whose sum is σ = 451721088. Its totient is φ = 178248672.

The previous prime is 290022991. The next prime is 290023007. The reversal of 290022993 is 399220092.

It is not a de Polignac number, because 290022993 - 2¹ = 290022991 is a prime.

It is a super-2 number, since 2×290022993² = 168226672937356098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (290022991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173146 + ... + 174812.

It is an arithmetic number, because the mean of its divisors is an integer number (18821712).

Almost surely, 2^290022993 is an apocalyptic number.

It is an amenable number.

290022993 is a deficient number, since it is larger than the sum of its proper divisors (161698095).

290022993 is a wasteful number, since it uses less digits than its factorization.

290022993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173 (or 3170 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 290022993 is about 17030.0614502708. The cubic root of 290022993 is about 661.9280878004.

The spelling of 290022993 in words is "two hundred ninety million, twenty-two thousand, nine hundred ninety-three".