140408701438 has 4 divisors (see below), whose sum is σ = 210613052160. Its totient is φ = 70204350718.

The previous prime is 140408701421. The next prime is 140408701493. The reversal of 140408701438 is 834107804041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 834107804041 = 19 ⋅43900410739.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 140408701438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35102175358 + ... + 35102175361.

It is an arithmetic number, because the mean of its divisors is an integer number (52653263040).

Almost surely, 2^140408701438 is an apocalyptic number.

140408701438 is a deficient number, since it is larger than the sum of its proper divisors (70204350722).

140408701438 is an equidigital number, since it uses as much as digits as its factorization.

140408701438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70204350721.

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 140408701438 in words is "one hundred forty billion, four hundred eight million, seven hundred one thousand, four hundred thirty-eight".