140815417 has 2 divisors, whose sum is σ = 140815418. Its totient is φ = 140815416.

The previous prime is 140815399. The next prime is 140815429. The reversal of 140815417 is 714518041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83978896 + 56836521 = 9164^2 + 7539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140815417 is a prime.

It is not a weakly prime, because it can be changed into another prime (140815447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70407708 + 70407709.

It is an arithmetic number, because the mean of its divisors is an integer number (70407709).

Almost surely, 2^140815417 is an apocalyptic number.

It is an amenable number.

140815417 is a deficient number, since it is larger than the sum of its proper divisors (1).

140815417 is an equidigital number, since it uses as much as digits as its factorization.

140815417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 140815417 is about 11866.5671952760. The cubic root of 140815417 is about 520.2555659437.

The spelling of 140815417 in words is "one hundred forty million, eight hundred fifteen thousand, four hundred seventeen".