3691940 has 24 divisors (see below), whose sum is σ = 8860992. Its totient is φ = 1265760.

The previous prime is 3691921. The next prime is 3691949. The reversal of 3691940 is 491963.

It is a junction number, because it is equal to n+sod(n) for n = 3691897 and 3691906.

It is not an unprimeable number, because it can be changed into a prime (3691949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13046 + ... + 13325.

It is an arithmetic number, because the mean of its divisors is an integer number (369208).

Almost surely, 2^3691940 is an apocalyptic number.

It is an amenable number.

3691940 is an abundant number, since it is smaller than the sum of its proper divisors (5169052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3691940 is a wasteful number, since it uses less digits than its factorization.

3691940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26387 (or 26385 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 3691940 is about 1921.4421667071. The cubic root of 3691940 is about 154.5556472254. Note that the first 3 decimals are identical.

The spelling of 3691940 in words is "three million, six hundred ninety-one thousand, nine hundred forty".