38998909 has 8 divisors (see below), whose sum is σ = 39432960. Its totient is φ = 38567616.

The previous prime is 38998907. The next prime is 38998933. The reversal of 38998909 is 90989983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38998909 - 2¹ = 38998907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38998909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38998907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39429 + ... + 40405.

It is an arithmetic number, because the mean of its divisors is an integer number (4929120).

Almost surely, 2^38998909 is an apocalyptic number.

It is an amenable number.

38998909 is a deficient number, since it is larger than the sum of its proper divisors (434051).

38998909 is a wasteful number, since it uses less digits than its factorization.

38998909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its (nonzero) digits is 1259712, while the sum is 55.

The square root of 38998909 is about 6244.9106478796. The cubic root of 38998909 is about 339.1179820397.

It can be divided in two parts, 3 and 8998909, that added together give a cube (8998912 = 208³).

The spelling of 38998909 in words is "thirty-eight million, nine hundred ninety-eight thousand, nine hundred nine".