10402729 has 4 divisors (see below), whose sum is σ = 10448784. Its totient is φ = 10356676.

The previous prime is 10402699. The next prime is 10402741. The reversal of 10402729 is 92720401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10402729 - 2¹¹ = 10400681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10402129) 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, 22687 + ... + 23140.

It is an arithmetic number, because the mean of its divisors is an integer number (2612196).

Almost surely, 2^10402729 is an apocalyptic number.

It is an amenable number.

10402729 is a deficient number, since it is larger than the sum of its proper divisors (46055).

10402729 is an equidigital number, since it uses as much as digits as its factorization.

10402729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46054.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 10402729 is about 3225.3261850548. The cubic root of 10402729 is about 218.2976673218.

The spelling of 10402729 in words is "ten million, four hundred two thousand, seven hundred twenty-nine".