402047471 has 8 divisors (see below), whose sum is σ = 463777920. Its totient is φ = 341390808.

The previous prime is 402047441. The next prime is 402047489. The reversal of 402047471 is 174740204.

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 402047471 - 2⁶ = 402047407 is a prime.

It is a super-3 number, since 3×402047471³ (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 (402047411) 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, 267641 + ... + 269138.

It is an arithmetic number, because the mean of its divisors is an integer number (57972240).

Almost surely, 2^402047471 is an apocalyptic number.

402047471 is a deficient number, since it is larger than the sum of its proper divisors (61730449).

402047471 is a wasteful number, since it uses less digits than its factorization.

402047471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536893.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 402047471 is about 20051.1214399594. The cubic root of 402047471 is about 738.0613187545.

Adding to 402047471 its reverse (174740204), we get a palindrome (576787675).

The spelling of 402047471 in words is "four hundred two million, forty-seven thousand, four hundred seventy-one".