389031497 has 4 divisors (see below), whose sum is σ = 392883396. Its totient is φ = 385179600.

The previous prime is 389031481. The next prime is 389031521. The reversal of 389031497 is 794130983.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 203091001 + 185940496 = 14251^2 + 13636^2 .

It is a cyclic number.

It is not a de Polignac number, because 389031497 - 2⁴ = 389031481 is a prime.

It is a super-3 number, since 3×389031497³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389031197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925798 + ... + 1925999.

It is an arithmetic number, because the mean of its divisors is an integer number (98220849).

Almost surely, 2^389031497 is an apocalyptic number.

It is an amenable number.

389031497 is a deficient number, since it is larger than the sum of its proper divisors (3851899).

389031497 is a wasteful number, since it uses less digits than its factorization.

389031497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3851898.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 389031497 is about 19723.8813877999. The cubic root of 389031497 is about 730.0090678801.

The spelling of 389031497 in words is "three hundred eighty-nine million, thirty-one thousand, four hundred ninety-seven".