40779764 has 6 divisors (see below), whose sum is σ = 71364594. Its totient is φ = 20389880.

The previous prime is 40779743. The next prime is 40779793. The reversal of 40779764 is 46797704.

It can be written as a sum of positive squares in only one way, i.e., 36699364 + 4080400 = 6058^2 + 2020^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5097467 + ... + 5097474.

It is an arithmetic number, because the mean of its divisors is an integer number (11894099).

Almost surely, 2^40779764 is an apocalyptic number.

It is an amenable number.

40779764 is a deficient number, since it is larger than the sum of its proper divisors (30584830).

40779764 is a wasteful number, since it uses less digits than its factorization.

40779764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10194945 (or 10194943 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 44.

The square root of 40779764 is about 6385.9035382630. The cubic root of 40779764 is about 344.2031993092.

The spelling of 40779764 in words is "forty million, seven hundred seventy-nine thousand, seven hundred sixty-four".