90219613 has 8 divisors (see below), whose sum is σ = 98594496. Its totient is φ = 81873600.

The previous prime is 90219611. The next prime is 90219617. The reversal of 90219613 is 31691209.

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 90219613 - 2¹ = 90219611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90219611) 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, 393 + ... + 13438.

It is an arithmetic number, because the mean of its divisors is an integer number (12324312).

Almost surely, 2^90219613 is an apocalyptic number.

It is an amenable number.

90219613 is a deficient number, since it is larger than the sum of its proper divisors (8374883).

90219613 is a wasteful number, since it uses less digits than its factorization.

90219613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14435.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 90219613 is about 9498.4005495662. The cubic root of 90219613 is about 448.5046877352.

It can be divided in two parts, 902196 and 13, that added together give a palindrome (902209).

The spelling of 90219613 in words is "ninety million, two hundred nineteen thousand, six hundred thirteen".