90800421 has 8 divisors (see below), whose sum is σ = 125242080. Its totient is φ = 58446192.

The previous prime is 90800419. The next prime is 90800429. The reversal of 90800421 is 12400809.

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

It is not a de Polignac number, because 90800421 - 2¹ = 90800419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90800391 and 90800400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90800429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521755 + ... + 521928.

It is an arithmetic number, because the mean of its divisors is an integer number (15655260).

Almost surely, 2^90800421 is an apocalyptic number.

It is an amenable number.

90800421 is a deficient number, since it is larger than the sum of its proper divisors (34441659).

90800421 is a wasteful number, since it uses less digits than its factorization.

90800421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043715.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 90800421 is about 9528.9254903163. The cubic root of 90800421 is about 449.4650779620.

The spelling of 90800421 in words is "ninety million, eight hundred thousand, four hundred twenty-one".