37994143 has 4 divisors (see below), whose sum is σ = 41448168. Its totient is φ = 34540120.

The previous prime is 37994141. The next prime is 37994149. The reversal of 37994143 is 34149973.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 37994143 - 2¹ = 37994141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 37994096 and 37994105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37994141) 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, 1726996 + ... + 1727017.

It is an arithmetic number, because the mean of its divisors is an integer number (10362042).

Almost surely, 2^37994143 is an apocalyptic number.

37994143 is a deficient number, since it is larger than the sum of its proper divisors (3454025).

37994143 is a wasteful number, since it uses less digits than its factorization.

37994143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454024.

The product of its digits is 81648, while the sum is 40.

The square root of 37994143 is about 6163.9389192301. The cubic root of 37994143 is about 336.1802669065.

The spelling of 37994143 in words is "thirty-seven million, nine hundred ninety-four thousand, one hundred forty-three".