4138812 has 18 divisors (see below), whose sum is σ = 10462088. Its totient is φ = 1379592.

The previous prime is 4138807. The next prime is 4138817. The reversal of 4138812 is 2188314.

It is an interprime number because it is at equal distance from previous prime (4138807) and next prime (4138817).

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57448 + ... + 57519.

Almost surely, 2^4138812 is an apocalyptic number.

It is an amenable number.

4138812 is an abundant number, since it is smaller than the sum of its proper divisors (6323276).

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

4138812 is a wasteful number, since it uses less digits than its factorization.

4138812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114977 (or 114972 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 4138812 is about 2034.4070389182. The cubic root of 4138812 is about 160.5555169403. Note that the first 4 decimals are identical.

It can be divided in two parts, 4138 and 812, that added together give a triangular number (4950 = T₉₉).

The spelling of 4138812 in words is "four million, one hundred thirty-eight thousand, eight hundred twelve".