140809764 has 24 divisors (see below), whose sum is σ = 334756800. Its totient is φ = 46050784.

The previous prime is 140809751. The next prime is 140809769. The reversal of 140809764 is 467908041.

It is a happy number.

140809764 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (140809769) 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, 110064 + ... + 111335.

It is an arithmetic number, because the mean of its divisors is an integer number (13948200).

Almost surely, 2^140809764 is an apocalyptic number.

It is an amenable number.

140809764 is an abundant number, since it is smaller than the sum of its proper divisors (193947036).

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

140809764 is a wasteful number, since it uses less digits than its factorization.

140809764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221459 (or 221457 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 140809764 is about 11866.3290026866. The cubic root of 140809764 is about 520.2486040070.

The spelling of 140809764 in words is "one hundred forty million, eight hundred nine thousand, seven hundred sixty-four".