90820401 has 8 divisors (see below), whose sum is σ = 138393024. Its totient is φ = 51897360.

The previous prime is 90820391. The next prime is 90820439. The reversal of 90820401 is 10402809.

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

It is not a de Polignac number, because 90820401 - 2⁵ = 90820369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90820441) 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, 2162370 + ... + 2162411.

It is an arithmetic number, because the mean of its divisors is an integer number (17299128).

Almost surely, 2^90820401 is an apocalyptic number.

It is an amenable number.

90820401 is a deficient number, since it is larger than the sum of its proper divisors (47572623).

90820401 is a wasteful number, since it uses less digits than its factorization.

90820401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324791.

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

The square root of 90820401 is about 9529.9738194814. The cubic root of 90820401 is about 449.4980427638.

The spelling of 90820401 in words is "ninety million, eight hundred twenty thousand, four hundred one".