140911806 has 32 divisors (see below), whose sum is σ = 324414720. Its totient is φ = 39969216.

The previous prime is 140911751. The next prime is 140911877. The reversal of 140911806 is 608119041.

It is a super-2 number, since 2×140911806² = 39712274140363272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6231 + ... + 17906.

It is an arithmetic number, because the mean of its divisors is an integer number (10137960).

Almost surely, 2^140911806 is an apocalyptic number.

140911806 is an abundant number, since it is smaller than the sum of its proper divisors (183502914).

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

140911806 is a wasteful number, since it uses less digits than its factorization.

140911806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24288.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 140911806 is about 11870.6278688197. The cubic root of 140911806 is about 520.3742448905.

Subtracting from 140911806 its product of nonzero digits (1728), we obtain a triangular number (140910078 = T₁₆₇₈₇).

The spelling of 140911806 in words is "one hundred forty million, nine hundred eleven thousand, eight hundred six".