406777433401 has 4 divisors (see below), whose sum is σ = 407667537652. Its totient is φ = 405887329152.

The previous prime is 406777433393. The next prime is 406777433407. The reversal of 406777433401 is 104334777604.

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 300631793401 + 106145640000 = 548299^2 + 325800^2 .

It is a cyclic number.

It is not a de Polignac number, because 406777433401 - 2³ = 406777433393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406777433407) 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, 445051440 + ... + 445052353.

It is an arithmetic number, because the mean of its divisors is an integer number (101916884413).

Almost surely, 2^406777433401 is an apocalyptic number.

It is an amenable number.

406777433401 is a deficient number, since it is larger than the sum of its proper divisors (890104251).

406777433401 is an equidigital number, since it uses as much as digits as its factorization.

406777433401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890104250.

The product of its (nonzero) digits is 1185408, while the sum is 46.

The spelling of 406777433401 in words is "four hundred six billion, seven hundred seventy-seven million, four hundred thirty-three thousand, four hundred one".