37994023 has 4 divisors (see below), whose sum is σ = 38475040. Its totient is φ = 37513008.

The previous prime is 37993981. The next prime is 37994029. The reversal of 37994023 is 32049973.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37994023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37994029) 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, 240390 + ... + 240547.

It is an arithmetic number, because the mean of its divisors is an integer number (9618760).

Almost surely, 2^37994023 is an apocalyptic number.

37994023 is a deficient number, since it is larger than the sum of its proper divisors (481017).

37994023 is an equidigital number, since it uses as much as digits as its factorization.

37994023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481016.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 37994023 is about 6163.9291851870. The cubic root of 37994023 is about 336.1799129776.

The spelling of 37994023 in words is "thirty-seven million, nine hundred ninety-four thousand, twenty-three".