38009421 has 12 divisors (see below), whose sum is σ = 55655548. Its totient is φ = 24992064.

The previous prime is 38009381. The next prime is 38009423. The reversal of 38009421 is 12490083.

It can be written as a sum of positive squares in 2 ways, for example, as 12152196 + 25857225 = 3486^2 + 5085^2 .

It is not a de Polignac number, because 38009421 - 2⁶ = 38009357 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 (38009423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28270 + ... + 29583.

Almost surely, 2^38009421 is an apocalyptic number.

It is an amenable number.

38009421 is a deficient number, since it is larger than the sum of its proper divisors (17646127).

38009421 is a wasteful number, since it uses less digits than its factorization.

38009421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57932 (or 57929 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 38009421 is about 6165.1780996172. The cubic root of 38009421 is about 336.2253218669.

The spelling of 38009421 in words is "thirty-eight million, nine thousand, four hundred twenty-one".