40400531443 has 4 divisors (see below), whose sum is σ = 40592003368. Its totient is φ = 40209059520.

The previous prime is 40400531429. The next prime is 40400531461. The reversal of 40400531443 is 34413500404.

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-40400531443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40400531473) 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, 95735646 + ... + 95736067.

It is an arithmetic number, because the mean of its divisors is an integer number (10148000842).

Almost surely, 2^40400531443 is an apocalyptic number.

40400531443 is a deficient number, since it is larger than the sum of its proper divisors (191471925).

40400531443 is a wasteful number, since it uses less digits than its factorization.

40400531443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191471924.

The product of its (nonzero) digits is 11520, while the sum is 28.

The spelling of 40400531443 in words is "forty billion, four hundred million, five hundred thirty-one thousand, four hundred forty-three".