789375457 has 8 divisors (see below), whose sum is σ = 850731560. Its totient is φ = 728110080.

The previous prime is 789375409. The next prime is 789375491. The reversal of 789375457 is 754573987.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 53012961 + 736362496 = 7281^2 + 27136^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 789375457 - 2²⁷ = 655157729 is a prime.

It is a super-2 number, since 2×789375457² = 1246227224227917698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 789375398 and 789375407.

It is not an unprimeable number, because it can be changed into a prime (789375557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4032 + ... + 39937.

It is an arithmetic number, because the mean of its divisors is an integer number (106341445).

Almost surely, 2^789375457 is an apocalyptic number.

It is an amenable number.

789375457 is a deficient number, since it is larger than the sum of its proper divisors (61356103).

789375457 is a wasteful number, since it uses less digits than its factorization.

789375457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45363.

The product of its digits is 7408800, while the sum is 55.

The square root of 789375457 is about 28095.8263270543. The cubic root of 789375457 is about 924.1898753519.

The spelling of 789375457 in words is "seven hundred eighty-nine million, three hundred seventy-five thousand, four hundred fifty-seven".