478091461 has 4 divisors (see below), whose sum is σ = 478168300. Its totient is φ = 478014624.

The previous prime is 478091417. The next prime is 478091483. The reversal of 478091461 is 164190874.

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 157000900 + 321090561 = 12530^2 + 17919^2 .

It is a cyclic number.

It is not a de Polignac number, because 478091461 - 2¹¹ = 478089413 is a prime.

It is a super-2 number, since 2×478091461² = 457142890162229042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478031461) 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, 28176 + ... + 41833.

It is an arithmetic number, because the mean of its divisors is an integer number (119542075).

Almost surely, 2^478091461 is an apocalyptic number.

It is an amenable number.

478091461 is a deficient number, since it is larger than the sum of its proper divisors (76839).

478091461 is an equidigital number, since it uses as much as digits as its factorization.

478091461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76838.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 478091461 is about 21865.3026734139. The cubic root of 478091461 is about 781.9344168066.

The spelling of 478091461 in words is "four hundred seventy-eight million, ninety-one thousand, four hundred sixty-one".