40486779 has 24 divisors (see below), whose sum is σ = 60231600. Its totient is φ = 26191872.

The previous prime is 40486763. The next prime is 40486781. The reversal of 40486779 is 97768404.

It is not a de Polignac number, because 40486779 - 2⁴ = 40486763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40486709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89947 + ... + 90395.

It is an arithmetic number, because the mean of its divisors is an integer number (2509650).

Almost surely, 2^40486779 is an apocalyptic number.

40486779 is a deficient number, since it is larger than the sum of its proper divisors (19744821).

40486779 is a wasteful number, since it uses less digits than its factorization.

40486779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 40486779 is about 6362.9222060308. The cubic root of 40486779 is about 343.3769001385.

The spelling of 40486779 in words is "forty million, four hundred eighty-six thousand, seven hundred seventy-nine".