38400985 has 16 divisors (see below), whose sum is σ = 52765056. Its totient is φ = 26281728.

The previous prime is 38400941. The next prime is 38400997. The reversal of 38400985 is 58900483.

It is a cyclic number.

It is not a de Polignac number, because 38400985 - 2¹³ = 38392793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33634 + ... + 34756.

It is an arithmetic number, because the mean of its divisors is an integer number (3297816).

Almost surely, 2^38400985 is an apocalyptic number.

38400985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38400985 is a deficient number, since it is larger than the sum of its proper divisors (14364071).

38400985 is a wasteful number, since it uses less digits than its factorization.

38400985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 38400985 is about 6196.8528302680. The cubic root of 38400985 is about 337.3759507529.

The spelling of 38400985 in words is "thirty-eight million, four hundred thousand, nine hundred eighty-five".