140967891 has 32 divisors (see below), whose sum is σ = 217536320. Its totient is φ = 90139392.

The previous prime is 140967877. The next prime is 140967907. The reversal of 140967891 is 198769041.

It is a happy number.

It is not a de Polignac number, because 140967891 - 2⁷ = 140967763 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (140967091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71961 + ... + 73893.

It is an arithmetic number, because the mean of its divisors is an integer number (6798010).

Almost surely, 2^140967891 is an apocalyptic number.

140967891 is a deficient number, since it is larger than the sum of its proper divisors (76568429).

140967891 is a wasteful number, since it uses less digits than its factorization.

140967891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052 (or 2046 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 140967891 is about 11872.9899772551. The cubic root of 140967891 is about 520.4432746360.

The spelling of 140967891 in words is "one hundred forty million, nine hundred sixty-seven thousand, eight hundred ninety-one".