38499789 has 4 divisors (see below), whose sum is σ = 51333056. Its totient is φ = 25666524.

The previous prime is 38499787. The next prime is 38499817. The reversal of 38499789 is 98799483.

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 an emirpimes, since its reverse is a distinct semiprime: 98799483 = 3 ⋅32933161.

It is not a de Polignac number, because 38499789 - 2¹ = 38499787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38499787) 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, 6416629 + ... + 6416634.

It is an arithmetic number, because the mean of its divisors is an integer number (12833264).

Almost surely, 2^38499789 is an apocalyptic number.

It is an amenable number.

38499789 is a deficient number, since it is larger than the sum of its proper divisors (12833267).

38499789 is a wasteful number, since it uses less digits than its factorization.

38499789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12833266.

The product of its digits is 3919104, while the sum is 57.

The square root of 38499789 is about 6204.8198201076. The cubic root of 38499789 is about 337.6650539725.

The spelling of 38499789 in words is "thirty-eight million, four hundred ninety-nine thousand, seven hundred eighty-nine".