140898869 has 2 divisors, whose sum is σ = 140898870. Its totient is φ = 140898868.

The previous prime is 140898859. The next prime is 140898871. The reversal of 140898869 is 968898041.

140898869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140730769 + 168100 = 11863^2 + 410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140898869 is a prime.

It is a super-2 number, since 2×140898869² = 39704982570958322, which contains 22 as substring.

Together with 140898871, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140898869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140898829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70449434 + 70449435.

It is an arithmetic number, because the mean of its divisors is an integer number (70449435).

Almost surely, 2^140898869 is an apocalyptic number.

It is an amenable number.

140898869 is a deficient number, since it is larger than the sum of its proper divisors (1).

140898869 is an equidigital number, since it uses as much as digits as its factorization.

140898869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 53.

The square root of 140898869 is about 11870.0829398956. The cubic root of 140898869 is about 520.3583193556.

The spelling of 140898869 in words is "one hundred forty million, eight hundred ninety-eight thousand, eight hundred sixty-nine".