3925629 has 6 divisors (see below), whose sum is σ = 5670366. Its totient is φ = 2617080.

The previous prime is 3925613. The next prime is 3925631. The reversal of 3925629 is 9265293.

3925629 is a `hidden beast` number, since 3 + 9 + 25 + 629 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3617604 + 308025 = 1902^2 + 555^2 .

It is not a de Polignac number, because 3925629 - 2⁴ = 3925613 is a prime.

3925629 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3925593 and 3925602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3925699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218082 + ... + 218099.

It is an arithmetic number, because the mean of its divisors is an integer number (945061).

Almost surely, 2^3925629 is an apocalyptic number.

It is an amenable number.

3925629 is a deficient number, since it is larger than the sum of its proper divisors (1744737).

3925629 is a wasteful number, since it uses less digits than its factorization.

3925629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436187 (or 436184 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 3925629 is about 1981.3200145358. The cubic root of 3925629 is about 157.7501391814.

It can be divided in two parts, 3925 and 629, that added together give a palindrome (4554).

The spelling of 3925629 in words is "three million, nine hundred twenty-five thousand, six hundred twenty-nine".