140038791 has 8 divisors (see below), whose sum is σ = 186949104. Its totient is φ = 93243840.

The previous prime is 140038781. The next prime is 140038793. The reversal of 140038791 is 197830041.

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

It is not a de Polignac number, because 140038791 - 2⁶ = 140038727 is a prime.

It is a super-2 number, since 2×140038791² = 39221725969483362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140038793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25966 + ... + 30891.

It is an arithmetic number, because the mean of its divisors is an integer number (23368638).

Almost surely, 2^140038791 is an apocalyptic number.

140038791 is a deficient number, since it is larger than the sum of its proper divisors (46910313).

140038791 is an equidigital number, since it uses as much as digits as its factorization.

140038791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57681.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 140038791 is about 11833.7986716016. The cubic root of 140038791 is about 519.2973633847.

The spelling of 140038791 in words is "one hundred forty million, thirty-eight thousand, seven hundred ninety-one".