10390939 has 4 divisors (see below), whose sum is σ = 11190256. Its totient is φ = 9591624.

The previous prime is 10390937. The next prime is 10390951. The reversal of 10390939 is 93909301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93909301 = 8081 ⋅11621.

It is a cyclic number.

It is not a de Polignac number, because 10390939 - 2¹ = 10390937 is a prime.

It is a super-2 number, since 2×10390939² = 215943226603442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10390937) 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, 399639 + ... + 399664.

It is an arithmetic number, because the mean of its divisors is an integer number (2797564).

Almost surely, 2^10390939 is an apocalyptic number.

10390939 is a deficient number, since it is larger than the sum of its proper divisors (799317).

10390939 is an equidigital number, since it uses as much as digits as its factorization.

10390939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799316.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 10390939 is about 3223.4979447799. The cubic root of 10390939 is about 218.2151664567.

The spelling of 10390939 in words is "ten million, three hundred ninety thousand, nine hundred thirty-nine".