38720469 has 4 divisors (see below), whose sum is σ = 51627296. Its totient is φ = 25813644.

The previous prime is 38720443. The next prime is 38720483. The reversal of 38720469 is 96402783.

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.

It is not a de Polignac number, because 38720469 - 2⁹ = 38719957 is a prime.

It is a super-2 number, since 2×38720469² = 2998549439159922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38700469) 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, 6453409 + ... + 6453414.

It is an arithmetic number, because the mean of its divisors is an integer number (12906824).

Almost surely, 2^38720469 is an apocalyptic number.

It is an amenable number.

38720469 is a deficient number, since it is larger than the sum of its proper divisors (12906827).

38720469 is a wasteful number, since it uses less digits than its factorization.

38720469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12906826.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 38720469 is about 6222.5773599048. The cubic root of 38720469 is about 338.3089882478.

The spelling of 38720469 in words is "thirty-eight million, seven hundred twenty thousand, four hundred sixty-nine".