40858473391 has 4 divisors (see below), whose sum is σ = 40858970632. Its totient is φ = 40857976152.

The previous prime is 40858473389. The next prime is 40858473407. The reversal of 40858473391 is 19337485804.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40858473391 - 2¹ = 40858473389 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 (40858473361) 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, 92820 + ... + 300553.

It is an arithmetic number, because the mean of its divisors is an integer number (10214742658).

Almost surely, 2^40858473391 is an apocalyptic number.

40858473391 is a deficient number, since it is larger than the sum of its proper divisors (497241).

40858473391 is a wasteful number, since it uses less digits than its factorization.

40858473391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497240.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 40858473391 in words is "forty billion, eight hundred fifty-eight million, four hundred seventy-three thousand, three hundred ninety-one".