3980691 has 32 divisors (see below), whose sum is σ = 6935040. Its totient is φ = 2224800.

The previous prime is 3980689. The next prime is 3980693. The reversal of 3980691 is 1960893.

It is an interprime number because it is at equal distance from previous prime (3980689) and next prime (3980693).

It is not a de Polignac number, because 3980691 - 2¹ = 3980689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3980693) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3346 + ... + 4376.

It is an arithmetic number, because the mean of its divisors is an integer number (216720).

Almost surely, 2^3980691 is an apocalyptic number.

3980691 is a deficient number, since it is larger than the sum of its proper divisors (2954349).

3980691 is a wasteful number, since it uses less digits than its factorization.

3980691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1058 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 3980691 is about 1995.1669103110. The cubic root of 3980691 is about 158.4842670316.

The spelling of 3980691 in words is "three million, nine hundred eighty thousand, six hundred ninety-one".