10390691 has 4 divisors (see below), whose sum is σ = 10414800. Its totient is φ = 10366584.

The previous prime is 10390669. The next prime is 10390693. The reversal of 10390691 is 19609301.

10390691 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 10390691 - 2¹⁰ = 10389667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10390693) 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, 11396 + ... + 12273.

It is an arithmetic number, because the mean of its divisors is an integer number (2603700).

Almost surely, 2^10390691 is an apocalyptic number.

10390691 is a deficient number, since it is larger than the sum of its proper divisors (24109).

10390691 is an equidigital number, since it uses as much as digits as its factorization.

10390691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24108.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 10390691 is about 3223.4594770215. The cubic root of 10390691 is about 218.2134303995.

Adding to 10390691 its reverse (19609301), we get a palindrome (29999992).

The spelling of 10390691 in words is "ten million, three hundred ninety thousand, six hundred ninety-one".