40067743 has 4 divisors (see below), whose sum is σ = 40183560. Its totient is φ = 39951928.

The previous prime is 40067719. The next prime is 40067749. The reversal of 40067743 is 34776004.

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-40067743 is a prime.

It is a super-2 number, since 2×40067743² = 3210848058228098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40067749) 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, 57388 + ... + 58081.

It is an arithmetic number, because the mean of its divisors is an integer number (10045890).

Almost surely, 2^40067743 is an apocalyptic number.

40067743 is a deficient number, since it is larger than the sum of its proper divisors (115817).

40067743 is a wasteful number, since it uses less digits than its factorization.

40067743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115816.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 40067743 is about 6329.9086091349. The cubic root of 40067743 is about 342.1881452821.

The spelling of 40067743 in words is "forty million, sixty-seven thousand, seven hundred forty-three".