3807978 has 32 divisors (see below), whose sum is σ = 8017920. Its totient is φ = 1204080.

The previous prime is 3807959. The next prime is 3808001. The reversal of 3807978 is 8797083.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10801 + ... + 11147.

It is an arithmetic number, because the mean of its divisors is an integer number (250560).

Almost surely, 2^3807978 is an apocalyptic number.

3807978 is an abundant number, since it is smaller than the sum of its proper divisors (4209942).

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

3807978 is a wasteful number, since it uses less digits than its factorization.

3807978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 3807978 is about 1951.4041098655. The cubic root of 3807978 is about 156.1582057096.

The spelling of 3807978 in words is "three million, eight hundred seven thousand, nine hundred seventy-eight".