10990427 has 4 divisors (see below), whose sum is σ = 12560496. Its totient is φ = 9420360.

The previous prime is 10990423. The next prime is 10990457. The reversal of 10990427 is 72409901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10990427 - 2² = 10990423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10990393 and 10990402.

It is not an unprimeable number, because it can be changed into a prime (10990423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785024 + ... + 785037.

It is an arithmetic number, because the mean of its divisors is an integer number (3140124).

Almost surely, 2^10990427 is an apocalyptic number.

10990427 is a deficient number, since it is larger than the sum of its proper divisors (1570069).

10990427 is an equidigital number, since it uses as much as digits as its factorization.

10990427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570068.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 10990427 is about 3315.1812921769. The cubic root of 10990427 is about 222.3334746918. Note that the first 3 decimals are identical.

The spelling of 10990427 in words is "ten million, nine hundred ninety thousand, four hundred twenty-seven".