140817894 has 16 divisors (see below), whose sum is σ = 321869568. Its totient is φ = 40233672.

The previous prime is 140817889. The next prime is 140817899. The reversal of 140817894 is 498718041.

140817894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (140817889) and next prime (140817899).

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 3352807 = 140817894 / (1 + 4 + 0 + 8 + 1 + 7 + 8 + 9 + 4).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140817899) 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, 1676362 + ... + 1676445.

It is an arithmetic number, because the mean of its divisors is an integer number (20116848).

Almost surely, 2^140817894 is an apocalyptic number.

140817894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

140817894 is an abundant number, since it is smaller than the sum of its proper divisors (181051674).

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

140817894 is a wasteful number, since it uses less digits than its factorization.

140817894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3352819.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 140817894 is about 11866.6715636694. The cubic root of 140817894 is about 520.2586164276.

The spelling of 140817894 in words is "one hundred forty million, eight hundred seventeen thousand, eight hundred ninety-four".