40779807 has 4 divisors (see below), whose sum is σ = 54373080. Its totient is φ = 27186536.

The previous prime is 40779803. The next prime is 40779811. The reversal of 40779807 is 70897704.

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

It is an interprime number because it is at equal distance from previous prime (40779803) and next prime (40779811).

It is a cyclic number.

It is not a de Polignac number, because 40779807 - 2² = 40779803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40779803) 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, 6796632 + ... + 6796637.

It is an arithmetic number, because the mean of its divisors is an integer number (13593270).

Almost surely, 2^40779807 is an apocalyptic number.

40779807 is a deficient number, since it is larger than the sum of its proper divisors (13593273).

40779807 is a wasteful number, since it uses less digits than its factorization.

40779807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13593272.

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 40779807 is about 6385.9069050527. The cubic root of 40779807 is about 344.2033202903.

The spelling of 40779807 in words is "forty million, seven hundred seventy-nine thousand, eight hundred seven".