40056837 has 4 divisors (see below), whose sum is σ = 53409120. Its totient is φ = 26704556.

The previous prime is 40056833. The next prime is 40056847. The reversal of 40056837 is 73865004.

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 40056837 - 2² = 40056833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40056798 and 40056807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40056833) 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, 6676137 + ... + 6676142.

It is an arithmetic number, because the mean of its divisors is an integer number (13352280).

Almost surely, 2^40056837 is an apocalyptic number.

It is an amenable number.

40056837 is a deficient number, since it is larger than the sum of its proper divisors (13352283).

40056837 is a wasteful number, since it uses less digits than its factorization.

40056837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13352282.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 40056837 is about 6329.0470846724. The cubic root of 40056837 is about 342.1570958453.

The spelling of 40056837 in words is "forty million, fifty-six thousand, eight hundred thirty-seven".