3935729 has 12 divisors (see below), whose sum is σ = 4727808. Its totient is φ = 3263400.

The previous prime is 3935719. The next prime is 3935753. The reversal of 3935729 is 9275393.

It is not a de Polignac number, because 3935729 - 2¹⁶ = 3870193 is a prime.

It is a super-2 number, since 2×3935729² = 30979925522882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3935692 and 3935701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3935719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224 + ... + 2814.

It is an arithmetic number, because the mean of its divisors is an integer number (393984).

Almost surely, 2^3935729 is an apocalyptic number.

It is an amenable number.

3935729 is a deficient number, since it is larger than the sum of its proper divisors (792079).

3935729 is a wasteful number, since it uses less digits than its factorization.

3935729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636 (or 2629 counting only the distinct ones).

The product of its digits is 51030, while the sum is 38.

The square root of 3935729 is about 1983.8671830543. The cubic root of 3935729 is about 157.8853117395.

It can be divided in two parts, 3935 and 729, that added together give a palindrome (4664).

The spelling of 3935729 in words is "three million, nine hundred thirty-five thousand, seven hundred twenty-nine".