38420769 has 4 divisors (see below), whose sum is σ = 51227696. Its totient is φ = 25613844.

The previous prime is 38420719. The next prime is 38420771. The reversal of 38420769 is 96702483.

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 38420769 - 2⁸ = 38420513 is a prime.

It is a super-2 number, since 2×38420769² = 2952310981102722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38420719) 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, 6403459 + ... + 6403464.

It is an arithmetic number, because the mean of its divisors is an integer number (12806924).

Almost surely, 2^38420769 is an apocalyptic number.

It is an amenable number.

38420769 is a deficient number, since it is larger than the sum of its proper divisors (12806927).

38420769 is a wasteful number, since it uses less digits than its factorization.

38420769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12806926.

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

The square root of 38420769 is about 6198.4489188829. The cubic root of 38420769 is about 337.4338789535.

The spelling of 38420769 in words is "thirty-eight million, four hundred twenty thousand, seven hundred sixty-nine".