40100397 has 4 divisors (see below), whose sum is σ = 53467200. Its totient is φ = 26733596.

The previous prime is 40100387. The next prime is 40100441. The reversal of 40100397 is 79300104.

40100397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40100397 - 2¹⁶ = 40034861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40100327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6683397 + ... + 6683402.

It is an arithmetic number, because the mean of its divisors is an integer number (13366800).

Almost surely, 2^40100397 is an apocalyptic number.

It is an amenable number.

40100397 is a deficient number, since it is larger than the sum of its proper divisors (13366803).

40100397 is a wasteful number, since it uses less digits than its factorization.

40100397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13366802.

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

The square root of 40100397 is about 6332.4874259646. The cubic root of 40100397 is about 342.2810777077.

The spelling of 40100397 in words is "forty million, one hundred thousand, three hundred ninety-seven".