82400411 has 4 divisors (see below), whose sum is σ = 87247512. Its totient is φ = 77553312.

The previous prime is 82400407. The next prime is 82400413. The reversal of 82400411 is 11400428.

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 82400411 - 2² = 82400407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82400413) 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, 2423525 + ... + 2423558.

It is an arithmetic number, because the mean of its divisors is an integer number (21811878).

Almost surely, 2^82400411 is an apocalyptic number.

82400411 is a deficient number, since it is larger than the sum of its proper divisors (4847101).

82400411 is a wasteful number, since it uses less digits than its factorization.

82400411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4847100.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 82400411 is about 9077.4672128298. The cubic root of 82400411 is about 435.1541462776.

Adding to 82400411 its reverse (11400428), we get a palindrome (93800839).

The spelling of 82400411 in words is "eighty-two million, four hundred thousand, four hundred eleven".