401915870 has 16 divisors (see below), whose sum is σ = 766004688. Its totient is φ = 151309440.

The previous prime is 401915863. The next prime is 401915879. The reversal of 401915870 is 78519104.

It is a self number, because there is not a number n which added to its sum of digits gives 401915870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401915879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1181936 + ... + 1182275.

It is an arithmetic number, because the mean of its divisors is an integer number (47875293).

Almost surely, 2^401915870 is an apocalyptic number.

401915870 is a deficient number, since it is larger than the sum of its proper divisors (364088818).

401915870 is a wasteful number, since it uses less digits than its factorization.

401915870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364235.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 401915870 is about 20047.8395344735. The cubic root of 401915870 is about 737.9807808294.

The spelling of 401915870 in words is "four hundred one million, nine hundred fifteen thousand, eight hundred seventy".