40747877 has 4 divisors (see below), whose sum is σ = 40761420. Its totient is φ = 40734336.

The previous prime is 40747843. The next prime is 40747879. The reversal of 40747877 is 77874704.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 19945156 + 20802721 = 4466^2 + 4561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40747877 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 (40747879) 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, 2 + ... + 9027.

It is an arithmetic number, because the mean of its divisors is an integer number (10190355).

Almost surely, 2^40747877 is an apocalyptic number.

It is an amenable number.

40747877 is a deficient number, since it is larger than the sum of its proper divisors (13543).

40747877 is an equidigital number, since it uses as much as digits as its factorization.

40747877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13542.

The product of its (nonzero) digits is 307328, while the sum is 44.

The square root of 40747877 is about 6383.4063790425. The cubic root of 40747877 is about 344.1134614237.

It can be divided in two parts, 407 and 47877, that added together give a palindrome (48284).

The spelling of 40747877 in words is "forty million, seven hundred forty-seven thousand, eight hundred seventy-seven".