864400741 has 4 divisors (see below), whose sum is σ = 865273984. Its totient is φ = 863527500.

The previous prime is 864400729. The next prime is 864400759. The reversal of 864400741 is 147004468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 864400741 - 2²³ = 856012133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 864400697 and 864400706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864400711) 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, 435135 + ... + 437116.

It is an arithmetic number, because the mean of its divisors is an integer number (216318496).

Almost surely, 2^864400741 is an apocalyptic number.

It is an amenable number.

864400741 is a deficient number, since it is larger than the sum of its proper divisors (873243).

864400741 is an equidigital number, since it uses as much as digits as its factorization.

864400741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873242.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 864400741 is about 29400.6928659853. The cubic root of 864400741 is about 952.5878622826.

The spelling of 864400741 in words is "eight hundred sixty-four million, four hundred thousand, seven hundred forty-one".