447478515 has 48 divisors (see below), whose sum is σ = 856926720. Its totient is φ = 214194240.

The previous prime is 447478487. The next prime is 447478543. The reversal of 447478515 is 515874744.

It is an interprime number because it is at equal distance from previous prime (447478487) and next prime (447478543).

It is not a de Polignac number, because 447478515 - 2⁵ = 447478483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33384 + ... + 44826.

It is an arithmetic number, because the mean of its divisors is an integer number (17852640).

Almost surely, 2^447478515 is an apocalyptic number.

447478515 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

447478515 is a deficient number, since it is larger than the sum of its proper divisors (409448205).

447478515 is a wasteful number, since it uses less digits than its factorization.

447478515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11544 (or 11541 counting only the distinct ones).

The product of its digits is 627200, while the sum is 45.

The square root of 447478515 is about 21153.6879763317. The cubic root of 447478515 is about 764.8754635157.

The spelling of 447478515 in words is "four hundred forty-seven million, four hundred seventy-eight thousand, five hundred fifteen".