402581411 has 4 divisors (see below), whose sum is σ = 402950832. Its totient is φ = 402211992.

The previous prime is 402581383. The next prime is 402581447. The reversal of 402581411 is 114185204.

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 402581411 - 2²⁶ = 335472547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402581111) 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, 183071 + ... + 185256.

It is an arithmetic number, because the mean of its divisors is an integer number (100737708).

Almost surely, 2^402581411 is an apocalyptic number.

402581411 is a deficient number, since it is larger than the sum of its proper divisors (369421).

402581411 is a wasteful number, since it uses less digits than its factorization.

402581411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369420.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 402581411 is about 20064.4314895788. The cubic root of 402581411 is about 738.3879021925.

The spelling of 402581411 in words is "four hundred two million, five hundred eighty-one thousand, four hundred eleven".