140888399 has 2 divisors, whose sum is σ = 140888400. Its totient is φ = 140888398.

The previous prime is 140888393. The next prime is 140888411. The reversal of 140888399 is 993888041.

140888399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (993888041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140888399 - 2²⁰ = 139839823 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140888393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70444199 + 70444200.

It is an arithmetic number, because the mean of its divisors is an integer number (70444200).

Almost surely, 2^140888399 is an apocalyptic number.

140888399 is a deficient number, since it is larger than the sum of its proper divisors (1).

140888399 is an equidigital number, since it uses as much as digits as its factorization.

140888399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 140888399 is about 11869.6419069827. The cubic root of 140888399 is about 520.3454300008.

The spelling of 140888399 in words is "one hundred forty million, eight hundred eighty-eight thousand, three hundred ninety-nine".