40143238379 has 8 divisors (see below), whose sum is σ = 40282286352. Its totient is φ = 40004359200.

The previous prime is 40143238339. The next prime is 40143238381. The reversal of 40143238379 is 97383234104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40143238379 - 2⁸ = 40143238123 is a prime.

It is a super-2 number, since 2×40143238379² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40143238339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443912 + ... + 526634.

It is an arithmetic number, because the mean of its divisors is an integer number (5035285794).

Almost surely, 2^40143238379 is an apocalyptic number.

40143238379 is a deficient number, since it is larger than the sum of its proper divisors (139047973).

40143238379 is a wasteful number, since it uses less digits than its factorization.

40143238379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84397.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 40143238379 in words is "forty billion, one hundred forty-three million, two hundred thirty-eight thousand, three hundred seventy-nine".