38404779 has 48 divisors (see below), whose sum is σ = 64044288. Its totient is φ = 20357568.

The previous prime is 38404777. The next prime is 38404801. The reversal of 38404779 is 97740483.

It is not a de Polignac number, because 38404779 - 2¹ = 38404777 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 38404779.

It is not an unprimeable number, because it can be changed into a prime (38404771) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 124944 + ... + 125250.

It is an arithmetic number, because the mean of its divisors is an integer number (1334256).

Almost surely, 2^38404779 is an apocalyptic number.

38404779 is a deficient number, since it is larger than the sum of its proper divisors (25639509).

38404779 is a wasteful number, since it uses less digits than its factorization.

38404779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 38404779 is about 6197.1589458396. The cubic root of 38404779 is about 337.3870612509.

It can be divided in two parts, 384047 and 79, that added together give a triangular number (384126 = T₈₇₆).

The spelling of 38404779 in words is "thirty-eight million, four hundred four thousand, seven hundred seventy-nine".