140894217 has 12 divisors (see below), whose sum is σ = 204085440. Its totient is φ = 93665688.

The previous prime is 140894213. The next prime is 140894227. The reversal of 140894217 is 712498041.

It is not a de Polignac number, because 140894217 - 2² = 140894213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140894213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18573 + ... + 25034.

It is an arithmetic number, because the mean of its divisors is an integer number (17007120).

Almost surely, 2^140894217 is an apocalyptic number.

It is an amenable number.

140894217 is a deficient number, since it is larger than the sum of its proper divisors (63191223).

140894217 is a wasteful number, since it uses less digits than its factorization.

140894217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43972 (or 43969 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 140894217 is about 11869.8869834552. The cubic root of 140894217 is about 520.3525924737.

The spelling of 140894217 in words is "one hundred forty million, eight hundred ninety-four thousand, two hundred seventeen".