290027986 has 4 divisors (see below), whose sum is σ = 435041982. Its totient is φ = 145013992.

The previous prime is 290027957. The next prime is 290027987. The reversal of 290027986 is 689720092.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 245392225 + 44635761 = 15665^2 + 6681^2 .

It is not an unprimeable number, because it can be changed into a prime (290027987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72506995 + ... + 72506998.

Almost surely, 2^290027986 is an apocalyptic number.

290027986 is a deficient number, since it is larger than the sum of its proper divisors (145013996).

290027986 is a wasteful number, since it uses less digits than its factorization.

290027986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145013995.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 290027986 is about 17030.2080433564. The cubic root of 290027986 is about 661.9318863360.

The spelling of 290027986 in words is "two hundred ninety million, twenty-seven thousand, nine hundred eighty-six".