140827905 has 36 divisors (see below), whose sum is σ = 257655060. Its totient is φ = 71146944.

The previous prime is 140827889. The next prime is 140827909. The reversal of 140827905 is 509728041.

It can be written as a sum of positive squares in 2 ways, for example, as 56610576 + 84217329 = 7524^2 + 9177^2 .

It is not a de Polignac number, because 140827905 - 2⁴ = 140827889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140827905.

It is not an unprimeable number, because it can be changed into a prime (140827909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11911 + ... + 20579.

It is an arithmetic number, because the mean of its divisors is an integer number (7157085).

Almost surely, 2^140827905 is an apocalyptic number.

140827905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140827905 is a deficient number, since it is larger than the sum of its proper divisors (116827155).

140827905 is a wasteful number, since it uses less digits than its factorization.

140827905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8718 (or 8696 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 140827905 is about 11867.0933677965. The cubic root of 140827905 is about 520.2709448456.

The spelling of 140827905 in words is "one hundred forty million, eight hundred twenty-seven thousand, nine hundred five".