90389206 has 8 divisors (see below), whose sum is σ = 135679104. Its totient is φ = 45162840.

The previous prime is 90389203. The next prime is 90389269. The reversal of 90389206 is 60298309.

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

It is a super-2 number, since 2×90389206² = 16340417122620872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90389203) 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, 12150 + ... + 18121.

It is an arithmetic number, because the mean of its divisors is an integer number (16959888).

Almost surely, 2^90389206 is an apocalyptic number.

90389206 is a deficient number, since it is larger than the sum of its proper divisors (45289898).

90389206 is a wasteful number, since it uses less digits than its factorization.

90389206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31766.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 90389206 is about 9507.3238085173. The cubic root of 90389206 is about 448.7855418347.

It can be divided in two parts, 903 and 89206, that added together give a palindrome (90109).

The spelling of 90389206 in words is "ninety million, three hundred eighty-nine thousand, two hundred six".