38690407 has 6 divisors (see below), whose sum is σ = 44236424. Its totient is φ = 33149100.

The previous prime is 38690401. The next prime is 38690413. The reversal of 38690407 is 70409683.

It is an interprime number because it is at equal distance from previous prime (38690401) and next prime (38690413).

It is not a de Polignac number, because 38690407 - 2⁷ = 38690279 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 (38690401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15282 + ... + 17632.

Almost surely, 2^38690407 is an apocalyptic number.

38690407 is a deficient number, since it is larger than the sum of its proper divisors (5546017).

38690407 is an frugal number, since it uses more digits than its factorization.

38690407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4709 (or 2358 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 38690407 is about 6220.1613323129. The cubic root of 38690407 is about 338.2214128799.

Multiplying 38690407 by its product of nonzero digits (36288), we get a square (1403997489216 = 1184904²).

The spelling of 38690407 in words is "thirty-eight million, six hundred ninety thousand, four hundred seven".