40043999983 has 4 divisors (see below), whose sum is σ = 43124307688. Its totient is φ = 36963692280.

The previous prime is 40043999969. The next prime is 40043999999. The reversal of 40043999983 is 38999934004.

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 40043999983 - 2⁵ = 40043999951 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 (40043994983) 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, 1540153833 + ... + 1540153858.

It is an arithmetic number, because the mean of its divisors is an integer number (10781076922).

Almost surely, 2^40043999983 is an apocalyptic number.

40043999983 is a deficient number, since it is larger than the sum of its proper divisors (3080307705).

40043999983 is a wasteful number, since it uses less digits than its factorization.

40043999983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080307704.

The product of its (nonzero) digits is 7558272, while the sum is 58.

The spelling of 40043999983 in words is "forty billion, forty-three million, nine hundred ninety-nine thousand, nine hundred eighty-three".