90798854 has 4 divisors (see below), whose sum is σ = 136198284. Its totient is φ = 45399426.

The previous prime is 90798839. The next prime is 90798859. The reversal of 90798854 is 45889709.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45889709 = 347 ⋅132247.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90798859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22699712 + ... + 22699715.

It is an arithmetic number, because the mean of its divisors is an integer number (34049571).

Almost surely, 2^90798854 is an apocalyptic number.

90798854 is a deficient number, since it is larger than the sum of its proper divisors (45399430).

90798854 is a wasteful number, since it uses less digits than its factorization.

90798854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45399429.

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 90798854 is about 9528.8432666300. The cubic root of 90798854 is about 449.4624923799.

The spelling of 90798854 in words is "ninety million, seven hundred ninety-eight thousand, eight hundred fifty-four".