990242401 has 8 divisors (see below), whose sum is σ = 1052365824. Its totient is φ = 928549440.

The previous prime is 990242377. The next prime is 990242413. The reversal of 990242401 is 104242099.

It is a happy number.

990242401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 990242401 - 2⁵ = 990242369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (990242471) 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, 102865 + ... + 112078.

It is an arithmetic number, because the mean of its divisors is an integer number (131545728).

Almost surely, 2^990242401 is an apocalyptic number.

It is an amenable number.

990242401 is a deficient number, since it is larger than the sum of its proper divisors (62123423).

990242401 is a wasteful number, since it uses less digits than its factorization.

990242401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215231.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 990242401 is about 31468.1172140946. The cubic root of 990242401 is about 996.7368303059.

The spelling of 990242401 in words is "nine hundred ninety million, two hundred forty-two thousand, four hundred one".