3923429 has 2 divisors, whose sum is σ = 3923430. Its totient is φ = 3923428.

The previous prime is 3923417. The next prime is 3923471. The reversal of 3923429 is 9243293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2982529 + 940900 = 1727^2 + 970^2 .

It is an emirp because it is prime and its reverse (9243293) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3923429 - 2⁸ = 3923173 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3923395 and 3923404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3923629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1961714 + 1961715.

It is an arithmetic number, because the mean of its divisors is an integer number (1961715).

Almost surely, 2^3923429 is an apocalyptic number.

It is an amenable number.

3923429 is a deficient number, since it is larger than the sum of its proper divisors (1).

3923429 is an equidigital number, since it uses as much as digits as its factorization.

3923429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 32.

The square root of 3923429 is about 1980.7647513019. The cubic root of 3923429 is about 157.7206649105.

It can be divided in two parts, 39234 and 29, that multiplied together give a triangular number (1137786 = T₁₅₀₈).

The spelling of 3923429 in words is "three million, nine hundred twenty-three thousand, four hundred twenty-nine".