140438892 has 54 divisors (see below), whose sum is σ = 361350892. Its totient is φ = 42420400.

The previous prime is 140438869. The next prime is 140438917. The reversal of 140438892 is 298834041.

It is a self number, because there is not a number n which added to its sum of digits gives 140438892.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 451417 + ... + 451727.

Almost surely, 2^140438892 is an apocalyptic number.

140438892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140438892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180675446).

140438892 is an abundant number, since it is smaller than the sum of its proper divisors (220912000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140438892 is a wasteful number, since it uses less digits than its factorization.

140438892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 140438892 is about 11850.6916253863. The cubic root of 140438892 is about 519.7914499011.

The spelling of 140438892 in words is "one hundred forty million, four hundred thirty-eight thousand, eight hundred ninety-two".