401520494 has 8 divisors (see below), whose sum is σ = 621709248. Its totient is φ = 194284080.

The previous prime is 401520487. The next prime is 401520523. The reversal of 401520494 is 494025104.

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

It is a super-2 number, since 2×401520494² = 322437414204008072, which contains 22 as substring.

It is a congruent number.

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, 3238007 + ... + 3238130.

It is an arithmetic number, because the mean of its divisors is an integer number (77713656).

Almost surely, 2^401520494 is an apocalyptic number.

401520494 is a deficient number, since it is larger than the sum of its proper divisors (220188754).

401520494 is a wasteful number, since it uses less digits than its factorization.

401520494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6476170.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 401520494 is about 20037.9762950254. The cubic root of 401520494 is about 737.7387105848.

Adding to 401520494 its reverse (494025104), we get a palindrome (895545598).

The spelling of 401520494 in words is "four hundred one million, five hundred twenty thousand, four hundred ninety-four".