40779804 has 48 divisors (see below), whose sum is σ = 108507168. Its totient is φ = 11808768.

The previous prime is 40779803. The next prime is 40779811. The reversal of 40779804 is 40897704.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 15 ways as a sum of consecutive naturals, for example, 5037 + ... + 10340.

It is an arithmetic number, because the mean of its divisors is an integer number (2260566).

Almost surely, 2^40779804 is an apocalyptic number.

It is an amenable number.

40779804 is an abundant number, since it is smaller than the sum of its proper divisors (67727364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40779804 is a wasteful number, since it uses less digits than its factorization.

40779804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15414 (or 15412 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 40779804 is about 6385.9066701605. The cubic root of 40779804 is about 344.2033118497.

The spelling of 40779804 in words is "forty million, seven hundred seventy-nine thousand, eight hundred four".