448978731 has 8 divisors (see below), whose sum is σ = 608784960. Its totient is φ = 294245832.

The previous prime is 448978723. The next prime is 448978763. The reversal of 448978731 is 137879844.

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

It is not a de Polignac number, because 448978731 - 2³ = 448978723 is a prime.

It is a super-2 number, since 2×448978731² = 403163801780740722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (448978771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1268125 + ... + 1268478.

It is an arithmetic number, because the mean of its divisors is an integer number (76098120).

Almost surely, 2^448978731 is an apocalyptic number.

448978731 is a deficient number, since it is larger than the sum of its proper divisors (159806229).

448978731 is a wasteful number, since it uses less digits than its factorization.

448978731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536665.

The product of its digits is 1354752, while the sum is 51.

The square root of 448978731 is about 21189.1182213890. The cubic root of 448978731 is about 765.7292836122.

It can be divided in two parts, 44897 and 8731, that added together give a triangular number (53628 = T₃₂₇).

The spelling of 448978731 in words is "four hundred forty-eight million, nine hundred seventy-eight thousand, seven hundred thirty-one".