40103657 has 16 divisors (see below), whose sum is σ = 45264960. Its totient is φ = 35217600.

The previous prime is 40103653. The next prime is 40103659. The reversal of 40103657 is 75630104.

It is not a de Polignac number, because 40103657 - 2² = 40103653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40103653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39083 + ... + 40095.

It is an arithmetic number, because the mean of its divisors is an integer number (2829060).

Almost surely, 2^40103657 is an apocalyptic number.

It is an amenable number.

40103657 is a deficient number, since it is larger than the sum of its proper divisors (5161303).

40103657 is a wasteful number, since it uses less digits than its factorization.

40103657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 40103657 is about 6332.7448235343. The cubic root of 40103657 is about 342.2903528118.

It can be divided in two parts, 4010 and 3657, that added together give a palindrome (7667).

The spelling of 40103657 in words is "forty million, one hundred three thousand, six hundred fifty-seven".