100440497 has 2 divisors, whose sum is σ = 100440498. Its totient is φ = 100440496.

The previous prime is 100440421. The next prime is 100440503. The reversal of 100440497 is 794044001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79637776 + 20802721 = 8924^2 + 4561^2 .

It is a cyclic number.

It is not a de Polignac number, because 100440497 - 2¹⁶ = 100374961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100440407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50220248 + 50220249.

It is an arithmetic number, because the mean of its divisors is an integer number (50220249).

Almost surely, 2^100440497 is an apocalyptic number.

It is an amenable number.

100440497 is a deficient number, since it is larger than the sum of its proper divisors (1).

100440497 is an equidigital number, since it uses as much as digits as its factorization.

100440497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 100440497 is about 10022.0006485731. Note that the first 3 decimals coincide. The cubic root of 100440497 is about 464.8394204077.

Adding to 100440497 its reverse (794044001), we get a palindrome (894484498).

The spelling of 100440497 in words is "one hundred million, four hundred forty thousand, four hundred ninety-seven".