140069440 has 84 divisors (see below), whose sum is σ = 388039356. Its totient is φ = 48018432.

The previous prime is 140069437. The next prime is 140069467. The reversal of 140069440 is 44960041.

It can be written as a sum of positive squares in 2 ways, for example, as 42928704 + 97140736 = 6552^2 + 9856^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 140069399 and 140069408.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11214 + ... + 20146.

Almost surely, 2^140069440 is an apocalyptic number.

140069440 is a gapful number since it is divisible by the number (10) 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 140069440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194019678).

140069440 is an abundant number, since it is smaller than the sum of its proper divisors (247969916).

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

140069440 is an equidigital number, since it uses as much as digits as its factorization.

140069440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8964 (or 8947 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 140069440 is about 11835.0935779993. The cubic root of 140069440 is about 519.3352452311.

The spelling of 140069440 in words is "one hundred forty million, sixty-nine thousand, four hundred forty".