3656390429 has 4 divisors (see below), whose sum is σ = 3664644576. Its totient is φ = 3648136284.

The previous prime is 3656390407. The next prime is 3656390443. The reversal of 3656390429 is 9240936563.

3656390429 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9240936563 = 17011 ⋅543233.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3656390429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3656390489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4126409 + ... + 4127294.

It is an arithmetic number, because the mean of its divisors is an integer number (916161144).

Almost surely, 2^3656390429 is an apocalyptic number.

It is an amenable number.

3656390429 is a deficient number, since it is larger than the sum of its proper divisors (8254147).

3656390429 is an equidigital number, since it uses as much as digits as its factorization.

3656390429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8254146.

The product of its (nonzero) digits is 1049760, while the sum is 47.

The square root of 3656390429 is about 60468.0943060057. The cubic root of 3656390429 is about 1540.5797599263.

The spelling of 3656390429 in words is "three billion, six hundred fifty-six million, three hundred ninety thousand, four hundred twenty-nine".