38440369 has 12 divisors (see below), whose sum is σ = 42445620. Its totient is φ = 34786400.

The previous prime is 38440357. The next prime is 38440387. The reversal of 38440369 is 96304483.

It can be written as a sum of positive squares in 2 ways, for example, as 18593344 + 19847025 = 4312^2 + 4455^2 .

It is not a de Polignac number, because 38440369 - 2¹¹ = 38438321 is a prime.

It is a super-2 number, since 2×38440369² = 2955323937712322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38440069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31959 + ... + 33139.

It is an arithmetic number, because the mean of its divisors is an integer number (3537135).

Almost surely, 2^38440369 is an apocalyptic number.

It is an amenable number.

38440369 is a deficient number, since it is larger than the sum of its proper divisors (4005251).

38440369 is a wasteful number, since it uses less digits than its factorization.

38440369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472 (or 1461 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 38440369 is about 6200.0297579931. The cubic root of 38440369 is about 337.4912487900.

It can be divided in two parts, 38440 and 369, that added together give a square (38809 = 197²).

The spelling of 38440369 in words is "thirty-eight million, four hundred forty thousand, three hundred sixty-nine".