3956429 has 2 divisors, whose sum is σ = 3956430. Its totient is φ = 3956428.

The previous prime is 3956419. The next prime is 3956453. The reversal of 3956429 is 9246593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3602404 + 354025 = 1898^2 + 595^2 .

It is an emirp because it is prime and its reverse (9246593) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3956429 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3956392 and 3956401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3956419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1978214 + 1978215.

It is an arithmetic number, because the mean of its divisors is an integer number (1978215).

Almost surely, 2^3956429 is an apocalyptic number.

It is an amenable number.

3956429 is a deficient number, since it is larger than the sum of its proper divisors (1).

3956429 is an equidigital number, since it uses as much as digits as its factorization.

3956429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 38.

The square root of 3956429 is about 1989.0774243352. The cubic root of 3956429 is about 158.1616275871.

It can be divided in two parts, 39564 and 29, that added together give a palindrome (39593).

The spelling of 3956429 in words is "three million, nine hundred fifty-six thousand, four hundred twenty-nine".