100040397 has 4 divisors (see below), whose sum is σ = 133387200. Its totient is φ = 66693596.

The previous prime is 100040389. The next prime is 100040407. The reversal of 100040397 is 793040001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100040397 - 2³ = 100040389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100040327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16673397 + ... + 16673402.

It is an arithmetic number, because the mean of its divisors is an integer number (33346800).

Almost surely, 2^100040397 is an apocalyptic number.

It is an amenable number.

100040397 is a deficient number, since it is larger than the sum of its proper divisors (33346803).

100040397 is an equidigital number, since it uses as much as digits as its factorization.

100040397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33346802.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 100040397 is about 10002.0196460515. The cubic root of 100040397 is about 464.2213770349.

Adding to 100040397 its reverse (793040001), we get a palindrome (893080398).

The spelling of 100040397 in words is "one hundred million, forty thousand, three hundred ninety-seven".