40494777413 has 4 divisors (see below), whose sum is σ = 40495848960. Its totient is φ = 40493705868.

The previous prime is 40494777403. The next prime is 40494777439. The reversal of 40494777413 is 31477749404.

It is a happy number.

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 40494777413 - 2⁴ = 40494777397 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 (40494777403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476933 + ... + 555386.

It is an arithmetic number, because the mean of its divisors is an integer number (10123962240).

Almost surely, 2^40494777413 is an apocalyptic number.

It is an amenable number.

40494777413 is a deficient number, since it is larger than the sum of its proper divisors (1071547).

40494777413 is a wasteful number, since it uses less digits than its factorization.

40494777413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071546.

The product of its (nonzero) digits is 2370816, while the sum is 50.

The spelling of 40494777413 in words is "forty billion, four hundred ninety-four million, seven hundred seventy-seven thousand, four hundred thirteen".