40456851 has 8 divisors (see below), whose sum is σ = 55197120. Its totient is φ = 26343912.

The previous prime is 40456817. The next prime is 40456901. The reversal of 40456851 is 15865404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-40456851 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (40456151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156681 + ... + 156938.

It is an arithmetic number, because the mean of its divisors is an integer number (6899640).

Almost surely, 2^40456851 is an apocalyptic number.

40456851 is a deficient number, since it is larger than the sum of its proper divisors (14740269).

40456851 is a wasteful number, since it uses less digits than its factorization.

40456851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313665.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 40456851 is about 6360.5700216254. The cubic root of 40456851 is about 343.2922707251.

The spelling of 40456851 in words is "forty million, four hundred fifty-six thousand, eight hundred fifty-one".