38779825 has 18 divisors (see below), whose sum is σ = 55939686. Its totient is φ = 26591040.

The previous prime is 38779787. The next prime is 38779837. The reversal of 38779825 is 52897783.

It can be written as a sum of positive squares in 3 ways, for example, as 2286144 + 36493681 = 1512^2 + 6041^2 .

It is not a de Polignac number, because 38779825 - 2⁹ = 38779313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14604 + ... + 17053.

Almost surely, 2^38779825 is an apocalyptic number.

38779825 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38779825 is a deficient number, since it is larger than the sum of its proper divisors (17159861).

38779825 is a wasteful number, since it uses less digits than its factorization.

38779825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31681 (or 31669 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The square root of 38779825 is about 6227.3449398600. The cubic root of 38779825 is about 338.4817686639.

The spelling of 38779825 in words is "thirty-eight million, seven hundred seventy-nine thousand, eight hundred twenty-five".