140438464 has 14 divisors (see below), whose sum is σ = 278682704. Its totient is φ = 70219200.

The previous prime is 140438453. The next prime is 140438471. The reversal of 140438464 is 464834041.

140438464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097112 + ... + 1097239.

Almost surely, 2^140438464 is an apocalyptic number.

It is an amenable number.

140438464 is a deficient number, since it is larger than the sum of its proper divisors (138244240).

140438464 is an equidigital number, since it uses as much as digits as its factorization.

140438464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194363 (or 2194353 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 140438464 is about 11850.6735673547. The cubic root of 140438464 is about 519.7909218637.

The spelling of 140438464 in words is "one hundred forty million, four hundred thirty-eight thousand, four hundred sixty-four".