10940639 has 4 divisors (see below), whose sum is σ = 11584224. Its totient is φ = 10297056.

The previous prime is 10940609. The next prime is 10940647. The reversal of 10940639 is 93604901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93604901 = 13 ⋅7200377.

It is a cyclic number.

It is not a de Polignac number, because 10940639 - 2¹² = 10936543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10940609) 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, 321767 + ... + 321800.

It is an arithmetic number, because the mean of its divisors is an integer number (2896056).

Almost surely, 2^10940639 is an apocalyptic number.

10940639 is a deficient number, since it is larger than the sum of its proper divisors (643585).

10940639 is an equidigital number, since it uses as much as digits as its factorization.

10940639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643584.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 10940639 is about 3307.6636769781. The cubic root of 10940639 is about 221.9972336857.

The spelling of 10940639 in words is "ten million, nine hundred forty thousand, six hundred thirty-nine".