4037985 has 32 divisors (see below), whose sum is σ = 8206080. Its totient is φ = 1845504.

The previous prime is 4037981. The next prime is 4037987. The reversal of 4037985 is 5897304.

It is not a de Polignac number, because 4037985 - 2² = 4037981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4037981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1192 + ... + 3081.

It is an arithmetic number, because the mean of its divisors is an integer number (256440).

Almost surely, 2^4037985 is an apocalyptic number.

4037985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4037985 is an abundant number, since it is smaller than the sum of its proper divisors (4168095).

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

4037985 is a wasteful number, since it uses less digits than its factorization.

4037985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4294 (or 4288 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 4037985 is about 2009.4738117229. The cubic root of 4037985 is about 159.2410015559.

It can be divided in two parts, 40 and 37985, that added together give a square (38025 = 195²).

The spelling of 4037985 in words is "four million, thirty-seven thousand, nine hundred eighty-five".