3977578 has 8 divisors (see below), whose sum is σ = 6508800. Its totient is φ = 1807980.

The previous prime is 3977573. The next prime is 3977587. The reversal of 3977578 is 8757793.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3977578² = 31642253492168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3977573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90378 + ... + 90421.

It is an arithmetic number, because the mean of its divisors is an integer number (813600).

Almost surely, 2^3977578 is an apocalyptic number.

3977578 is a deficient number, since it is larger than the sum of its proper divisors (2531222).

3977578 is a wasteful number, since it uses less digits than its factorization.

3977578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180812.

The product of its digits is 370440, while the sum is 46.

The square root of 3977578 is about 1994.3866224983. The cubic root of 3977578 is about 158.4429433698.

The spelling of 3977578 in words is "three million, nine hundred seventy-seven thousand, five hundred seventy-eight".