38402869 has 4 divisors (see below), whose sum is σ = 38415520. Its totient is φ = 38390220.

The previous prime is 38402849. The next prime is 38402879. The reversal of 38402869 is 96820483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 38402869 - 2¹³ = 38394677 is a prime.

It is a super-2 number, since 2×38402869² = 2949560694862322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38402849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264 + ... + 8854.

It is an arithmetic number, because the mean of its divisors is an integer number (9603880).

Almost surely, 2^38402869 is an apocalyptic number.

It is an amenable number.

38402869 is a deficient number, since it is larger than the sum of its proper divisors (12651).

38402869 is an equidigital number, since it uses as much as digits as its factorization.

38402869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12650.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 38402869 is about 6197.0048410502. The cubic root of 38402869 is about 337.3814680237.

The spelling of 38402869 in words is "thirty-eight million, four hundred two thousand, eight hundred sixty-nine".