401720910 has 16 divisors (see below), whose sum is σ = 964130256. Its totient is φ = 107125568.

The previous prime is 401720899. The next prime is 401720923. The reversal of 401720910 is 19027104.

It is a super-2 number, since 2×401720910² = 322759379062456200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 6695319 + ... + 6695378.

It is an arithmetic number, because the mean of its divisors is an integer number (60258141).

Almost surely, 2^401720910 is an apocalyptic number.

401720910 is an abundant number, since it is smaller than the sum of its proper divisors (562409346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401720910 is a wasteful number, since it uses less digits than its factorization.

401720910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13390707.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 401720910 is about 20042.9765753493. The cubic root of 401720910 is about 737.8614357842.

The spelling of 401720910 in words is "four hundred one million, seven hundred twenty thousand, nine hundred ten".