406239257471 has 8 divisors (see below), whose sum is σ = 410817607200. Its totient is φ = 401661216000.

The previous prime is 406239257339. The next prime is 406239257513. The reversal of 406239257471 is 174752932604.

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 406239257471 - 2¹⁰ = 406239256447 is a prime.

It is a super-3 number, since 3×406239257471³ (a number of 36 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 (406239287471) 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, 3506471 + ... + 3620471.

It is an arithmetic number, because the mean of its divisors is an integer number (51352200900).

Almost surely, 2^406239257471 is an apocalyptic number.

406239257471 is a deficient number, since it is larger than the sum of its proper divisors (4578349729).

406239257471 is a wasteful number, since it uses less digits than its factorization.

406239257471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154129.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 406239257471 in words is "four hundred six billion, two hundred thirty-nine million, two hundred fifty-seven thousand, four hundred seventy-one".