38890407 has 8 divisors (see below), whose sum is σ = 54904176. Its totient is φ = 24401792.

The previous prime is 38890391. The next prime is 38890409. The reversal of 38890407 is 70409883.

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 38890407 - 2⁴ = 38890391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38890409) 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, 381228 + ... + 381329.

It is an arithmetic number, because the mean of its divisors is an integer number (6863022).

Almost surely, 2^38890407 is an apocalyptic number.

38890407 is a deficient number, since it is larger than the sum of its proper divisors (16013769).

38890407 is a wasteful number, since it uses less digits than its factorization.

38890407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762577.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 38890407 is about 6236.2173631136. The cubic root of 38890407 is about 338.8031941265.

It can be divided in two parts, 38 and 890407, that added together give a triangular number (890445 = T₁₃₃₄).

The spelling of 38890407 in words is "thirty-eight million, eight hundred ninety thousand, four hundred seven".