140916291 has 4 divisors (see below), whose sum is σ = 187888392. Its totient is φ = 93944192.

The previous prime is 140916287. The next prime is 140916301. The reversal of 140916291 is 192619041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140916291 - 2² = 140916287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140916211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23486046 + ... + 23486051.

It is an arithmetic number, because the mean of its divisors is an integer number (46972098).

Almost surely, 2^140916291 is an apocalyptic number.

140916291 is a deficient number, since it is larger than the sum of its proper divisors (46972101).

140916291 is an equidigital number, since it uses as much as digits as its factorization.

140916291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46972100.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 140916291 is about 11870.8167789752. The cubic root of 140916291 is about 520.3797657284.

The spelling of 140916291 in words is "one hundred forty million, nine hundred sixteen thousand, two hundred ninety-one".