401219487 has 24 divisors (see below), whose sum is σ = 612363024. Its totient is φ = 262424448.

The previous prime is 401219479. The next prime is 401219491. The reversal of 401219487 is 784912104.

It is not a de Polignac number, because 401219487 - 2³ = 401219479 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401219407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2698 + ... + 28455.

It is an arithmetic number, because the mean of its divisors is an integer number (25515126).

Almost surely, 2^401219487 is an apocalyptic number.

401219487 is a deficient number, since it is larger than the sum of its proper divisors (211143537).

401219487 is an equidigital number, since it uses as much as digits as its factorization.

401219487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31221 (or 31209 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 401219487 is about 20030.4639736577. The cubic root of 401219487 is about 737.5543115035.

The spelling of 401219487 in words is "four hundred one million, two hundred nineteen thousand, four hundred eighty-seven".