140347091 has 8 divisors (see below), whose sum is σ = 148503120. Its totient is φ = 132268032.

The previous prime is 140347061. The next prime is 140347117. The reversal of 140347091 is 190743041.

140347091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140347091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140347061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15470 + ... + 22803.

It is an arithmetic number, because the mean of its divisors is an integer number (18562890).

Almost surely, 2^140347091 is an apocalyptic number.

140347091 is a deficient number, since it is larger than the sum of its proper divisors (8156029).

140347091 is a wasteful number, since it uses less digits than its factorization.

140347091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38485.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 140347091 is about 11846.8177583687. The cubic root of 140347091 is about 519.6781674735.

The spelling of 140347091 in words is "one hundred forty million, three hundred forty-seven thousand, ninety-one".