413820391 has 4 divisors (see below), whose sum is σ = 414242352. Its totient is φ = 413398432.

The previous prime is 413820373. The next prime is 413820403. The reversal of 413820391 is 193028314.

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 413820391 - 2¹⁵ = 413787623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (413820311) 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, 209506 + ... + 211471.

It is an arithmetic number, because the mean of its divisors is an integer number (103560588).

Almost surely, 2^413820391 is an apocalyptic number.

413820391 is a deficient number, since it is larger than the sum of its proper divisors (421961).

413820391 is an equidigital number, since it uses as much as digits as its factorization.

413820391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421960.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 413820391 is about 20342.5758201856. The cubic root of 413820391 is about 745.1961953434.

The spelling of 413820391 in words is "four hundred thirteen million, eight hundred twenty thousand, three hundred ninety-one".