140407889 has 4 divisors (see below), whose sum is σ = 140436660. Its totient is φ = 140379120.

The previous prime is 140407867. The next prime is 140407907. The reversal of 140407889 is 988704041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988704041 = 13 ⋅76054157.

It can be written as a sum of positive squares in 2 ways, for example, as 92313664 + 48094225 = 9608^2 + 6935^2 .

It is a cyclic number.

It is not a de Polignac number, because 140407889 - 2⁸ = 140407633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140407819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5042 + ... + 17499.

It is an arithmetic number, because the mean of its divisors is an integer number (35109165).

Almost surely, 2^140407889 is an apocalyptic number.

It is an amenable number.

140407889 is a deficient number, since it is larger than the sum of its proper divisors (28771).

140407889 is an equidigital number, since it uses as much as digits as its factorization.

140407889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28770.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 140407889 is about 11849.3834860722. The cubic root of 140407889 is about 519.7531977235.

The spelling of 140407889 in words is "one hundred forty million, four hundred seven thousand, eight hundred eighty-nine".