841504397 has 4 divisors (see below), whose sum is σ = 870521820. Its totient is φ = 812486976.

The previous prime is 841504387. The next prime is 841504399. The reversal of 841504397 is 793405148.

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 593945641 + 247558756 = 24371^2 + 15734^2 .

It is a cyclic number.

It is not a de Polignac number, because 841504397 - 2¹⁰ = 841503373 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 (841504399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14508668 + ... + 14508725.

It is an arithmetic number, because the mean of its divisors is an integer number (217630455).

Almost surely, 2^841504397 is an apocalyptic number.

It is an amenable number.

841504397 is a deficient number, since it is larger than the sum of its proper divisors (29017423).

841504397 is a wasteful number, since it uses less digits than its factorization.

841504397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29017422.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 841504397 is about 29008.6951964407. The cubic root of 841504397 is about 944.1017366922.

The spelling of 841504397 in words is "eight hundred forty-one million, five hundred four thousand, three hundred ninety-seven".