2087429 has 4 divisors (see below), whose sum is σ = 2143884. Its totient is φ = 2030976.

The previous prime is 2087419. The next prime is 2087443. The reversal of 2087429 is 9247802.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1600225 + 487204 = 1265^2 + 698^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2087429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2087395 and 2087404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2087419) 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, 28172 + ... + 28245.

It is an arithmetic number, because the mean of its divisors is an integer number (535971).

2^2087429 is an apocalyptic number.

It is an amenable number.

2087429 is a deficient number, since it is larger than the sum of its proper divisors (56455).

2087429 is an equidigital number, since it uses as much as digits as its factorization.

2087429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56454.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2087429 is about 1444.7937569079. The cubic root of 2087429 is about 127.8018785597.

The spelling of 2087429 in words is "two million, eighty-seven thousand, four hundred twenty-nine".