390433471 has 4 divisors (see below), whose sum is σ = 392590744. Its totient is φ = 388276200.

The previous prime is 390433469. The next prime is 390433501. The reversal of 390433471 is 174334093.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 390433471 - 2¹ = 390433469 is a prime.

It is a super-3 number, since 3×390433471³ (a number of 27 digits) contains 333 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 (390403471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078365 + ... + 1078726.

It is an arithmetic number, because the mean of its divisors is an integer number (98147686).

Almost surely, 2^390433471 is an apocalyptic number.

390433471 is a deficient number, since it is larger than the sum of its proper divisors (2157273).

390433471 is a wasteful number, since it uses less digits than its factorization.

390433471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157272.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 390433471 is about 19759.3894389478. The cubic root of 390433471 is about 730.8849410600.

The spelling of 390433471 in words is "three hundred ninety million, four hundred thirty-three thousand, four hundred seventy-one".