140077891 has 8 divisors (see below), whose sum is σ = 141596000. Its totient is φ = 138568320.

The previous prime is 140077879. The next prime is 140077913. The reversal of 140077891 is 198770041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140077891 - 2¹⁵ = 140045123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140077891.

It is not an unprimeable number, because it can be changed into a prime (140077811) 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 7 ways as a sum of consecutive naturals, for example, 34075 + ... + 37963.

It is an arithmetic number, because the mean of its divisors is an integer number (17699500).

Almost surely, 2^140077891 is an apocalyptic number.

140077891 is a deficient number, since it is larger than the sum of its proper divisors (1518109).

140077891 is a wasteful number, since it uses less digits than its factorization.

140077891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 140077891 is about 11835.4506040117. The cubic root of 140077891 is about 519.3456896076.

The spelling of 140077891 in words is "one hundred forty million, seventy-seven thousand, eight hundred ninety-one".