3994577 has 4 divisors (see below), whose sum is σ = 4079616. Its totient is φ = 3909540.

The previous prime is 3994561. The next prime is 3994591. The reversal of 3994577 is 7754993.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7754993 = 857 ⋅9049.

It is a cyclic number.

It is not a de Polignac number, because 3994577 - 2⁴ = 3994561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3994537) 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, 42449 + ... + 42542.

It is an arithmetic number, because the mean of its divisors is an integer number (1019904).

Almost surely, 2^3994577 is an apocalyptic number.

It is an amenable number.

3994577 is a deficient number, since it is larger than the sum of its proper divisors (85039).

3994577 is an equidigital number, since it uses as much as digits as its factorization.

3994577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85038.

The product of its digits is 238140, while the sum is 44.

The square root of 3994577 is about 1998.6437901737. The cubic root of 3994577 is about 158.6683354539.

The spelling of 3994577 in words is "three million, nine hundred ninety-four thousand, five hundred seventy-seven".