3960634 has 4 divisors (see below), whose sum is σ = 5940954. Its totient is φ = 1980316.

The previous prime is 3960631. The next prime is 3960667. The reversal of 3960634 is 4360693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4360693 = 1049 ⋅4157.

It can be written as a sum of positive squares in only one way, i.e., 2146225 + 1814409 = 1465^2 + 1347^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 3960596 and 3960605.

It is not an unprimeable number, because it can be changed into a prime (3960631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990157 + ... + 990160.

Almost surely, 2^3960634 is an apocalyptic number.

3960634 is a deficient number, since it is larger than the sum of its proper divisors (1980320).

3960634 is a wasteful number, since it uses less digits than its factorization.

3960634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980319.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 3960634 is about 1990.1341663315. The cubic root of 3960634 is about 158.2176405696.

The spelling of 3960634 in words is "three million, nine hundred sixty thousand, six hundred thirty-four".