40351679 has 4 divisors (see below), whose sum is σ = 40368240. Its totient is φ = 40335120.

The previous prime is 40351657. The next prime is 40351681. The reversal of 40351679 is 97615304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40351679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40351609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3827 + ... + 9764.

It is an arithmetic number, because the mean of its divisors is an integer number (10092060).

Almost surely, 2^40351679 is an apocalyptic number.

40351679 is a deficient number, since it is larger than the sum of its proper divisors (16561).

40351679 is a wasteful number, since it uses less digits than its factorization.

40351679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16560.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 40351679 is about 6352.2971435537. The cubic root of 40351679 is about 342.9945373365.

It can be divided in two parts, 4035167 and 9, that multiplied together give a triangular number (36316503 = T₈₅₂₂).

The spelling of 40351679 in words is "forty million, three hundred fifty-one thousand, six hundred seventy-nine".