2139763 has 4 divisors (see below), whose sum is σ = 2147608. Its totient is φ = 2131920.

The previous prime is 2139757. The next prime is 2139811. The reversal of 2139763 is 3679312.

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 2139763 - 2¹⁷ = 2008691 is a prime.

It is an Ulam number.

It is a Duffinian number.

2139763 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2139733) 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, 3498 + ... + 4063.

It is an arithmetic number, because the mean of its divisors is an integer number (536902).

2^2139763 is an apocalyptic number.

2139763 is a deficient number, since it is larger than the sum of its proper divisors (7845).

2139763 is an equidigital number, since it uses as much as digits as its factorization.

2139763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7844.

The product of its digits is 6804, while the sum is 31.

The square root of 2139763 is about 1462.7928766575. The cubic root of 2139763 is about 128.8611168804.

The spelling of 2139763 in words is "two million, one hundred thirty-nine thousand, seven hundred sixty-three".