140191417 has 12 divisors (see below), whose sum is σ = 148855104. Its totient is φ = 131756240.

The previous prime is 140191411. The next prime is 140191421. The reversal of 140191417 is 714191041.

140191417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-140191417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140191411) 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, 478323 + ... + 478615.

It is an arithmetic number, because the mean of its divisors is an integer number (12404592).

Almost surely, 2^140191417 is an apocalyptic number.

It is an amenable number.

140191417 is a deficient number, since it is larger than the sum of its proper divisors (8663687).

140191417 is an frugal number, since it uses more digits than its factorization.

140191417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 140191417 is about 11840.2456477896. The cubic root of 140191417 is about 519.4859528037.

It can be divided in two parts, 140191 and 417, that added together give a cube (140608 = 52³).

The spelling of 140191417 in words is "one hundred forty million, one hundred ninety-one thousand, four hundred seventeen".