140446857 has 16 divisors (see below), whose sum is σ = 196422912. Its totient is φ = 89159040.

The previous prime is 140446849. The next prime is 140446861. The reversal of 140446857 is 758644041.

It is not a de Polignac number, because 140446857 - 2³ = 140446849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140441857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8244 + ... + 18677.

It is an arithmetic number, because the mean of its divisors is an integer number (12276432).

Almost surely, 2^140446857 is an apocalyptic number.

It is an amenable number.

140446857 is a deficient number, since it is larger than the sum of its proper divisors (55976055).

140446857 is a wasteful number, since it uses less digits than its factorization.

140446857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27008.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 140446857 is about 11851.0276769570. The cubic root of 140446857 is about 519.8012763829.

The spelling of 140446857 in words is "one hundred forty million, four hundred forty-six thousand, eight hundred fifty-seven".