40103857 has 4 divisors (see below), whose sum is σ = 40587120. Its totient is φ = 39620596.

The previous prime is 40103837. The next prime is 40103891. The reversal of 40103857 is 75830104.

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 40103857 - 2¹⁹ = 39579569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40103807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241507 + ... + 241672.

It is an arithmetic number, because the mean of its divisors is an integer number (10146780).

Almost surely, 2^40103857 is an apocalyptic number.

It is an amenable number.

40103857 is a deficient number, since it is larger than the sum of its proper divisors (483263).

40103857 is an equidigital number, since it uses as much as digits as its factorization.

40103857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483262.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 40103857 is about 6332.7606144556. The cubic root of 40103857 is about 342.2909218202.

The spelling of 40103857 in words is "forty million, one hundred three thousand, eight hundred fifty-seven".