458078440 has 16 divisors (see below), whose sum is σ = 1030676580. Its totient is φ = 183231360.

The previous prime is 458078407. The next prime is 458078473. The reversal of 458078440 is 44870854.

It is an interprime number because it is at equal distance from previous prime (458078407) and next prime (458078473).

It can be written as a sum of positive squares in 2 ways, for example, as 441252036 + 16826404 = 21006^2 + 4102^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 11451961 = 458078440 / (4 + 5 + 8 + 0 + 7 + 8 + 4 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 458078393 and 458078402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5725941 + ... + 5726020.

Almost surely, 2^458078440 is an apocalyptic number.

458078440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

458078440 is an abundant number, since it is smaller than the sum of its proper divisors (572598140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

458078440 is a wasteful number, since it uses less digits than its factorization.

458078440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11451972 (or 11451968 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 40.

The square root of 458078440 is about 21402.7671108200. The cubic root of 458078440 is about 770.8678807079.

The spelling of 458078440 in words is "four hundred fifty-eight million, seventy-eight thousand, four hundred forty".