10402739 has 4 divisors (see below), whose sum is σ = 10855056. Its totient is φ = 9950424.

The previous prime is 10402699. The next prime is 10402741. The reversal of 10402739 is 93720401.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10402739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10432739) 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, 226124 + ... + 226169.

It is an arithmetic number, because the mean of its divisors is an integer number (2713764).

Almost surely, 2^10402739 is an apocalyptic number.

10402739 is a deficient number, since it is larger than the sum of its proper divisors (452317).

10402739 is an equidigital number, since it uses as much as digits as its factorization.

10402739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452316.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 10402739 is about 3225.3277352852. The cubic root of 10402739 is about 218.2977372707.

The spelling of 10402739 in words is "ten million, four hundred two thousand, seven hundred thirty-nine".