388090007 has 8 divisors (see below), whose sum is σ = 398019600. Its totient is φ = 378201600.

The previous prime is 388089983. The next prime is 388090013. The reversal of 388090007 is 700090883.

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 388090007 - 2¹⁶ = 388024471 is a prime.

It is a super-2 number, since 2×388090007² = 301227707066520098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388090037) 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, 9257 + ... + 29357.

It is an arithmetic number, because the mean of its divisors is an integer number (49752450).

Almost surely, 2^388090007 is an apocalyptic number.

388090007 is a deficient number, since it is larger than the sum of its proper divisors (9929593).

388090007 is a wasteful number, since it uses less digits than its factorization.

388090007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20593.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 388090007 is about 19700.0001776650. Note that the first 3 decimals coincide. The cubic root of 388090007 is about 729.4196970724.

The spelling of 388090007 in words is "three hundred eighty-eight million, ninety thousand, seven".