90789950 has 12 divisors (see below), whose sum is σ = 168869400. Its totient is φ = 36315960.

The previous prime is 90789931. The next prime is 90789953. The reversal of 90789950 is 5998709.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 90789895 and 90789904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90789953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 907850 + ... + 907949.

It is an arithmetic number, because the mean of its divisors is an integer number (14072450).

Almost surely, 2^90789950 is an apocalyptic number.

90789950 is a deficient number, since it is larger than the sum of its proper divisors (78079450).

90789950 is a wasteful number, since it uses less digits than its factorization.

90789950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815811 (or 1815806 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 47.

The square root of 90789950 is about 9528.3760421176. The cubic root of 90789950 is about 449.4478000327.

The spelling of 90789950 in words is "ninety million, seven hundred eighty-nine thousand, nine hundred fifty".