40038694 has 4 divisors (see below), whose sum is σ = 60058044. Its totient is φ = 20019346.

The previous prime is 40038679. The next prime is 40038721. The reversal of 40038694 is 49683004.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10009672 + ... + 10009675.

It is an arithmetic number, because the mean of its divisors is an integer number (15014511).

Almost surely, 2^40038694 is an apocalyptic number.

40038694 is a deficient number, since it is larger than the sum of its proper divisors (20019350).

40038694 is a wasteful number, since it uses less digits than its factorization.

40038694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20019349.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 40038694 is about 6327.6136102009. The cubic root of 40038694 is about 342.1054301446.

The spelling of 40038694 in words is "forty million, thirty-eight thousand, six hundred ninety-four".