401615716 has 12 divisors (see below), whose sum is σ = 702974188. Its totient is φ = 200765952.

The previous prime is 401615681. The next prime is 401615717. The reversal of 401615716 is 617516104.

It can be written as a sum of positive squares in 2 ways, for example, as 366569316 + 35046400 = 19146^2 + 5920^2 .

It is a super-2 number, since 2×401615716² = 322590366676385312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401615717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22900 + ... + 36436.

Almost surely, 2^401615716 is an apocalyptic number.

It is an amenable number.

401615716 is a deficient number, since it is larger than the sum of its proper divisors (301358472).

401615716 is a wasteful number, since it uses less digits than its factorization.

401615716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20958 (or 20956 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 401615716 is about 20040.3521925140. The cubic root of 401615716 is about 737.7970250868.

The spelling of 401615716 in words is "four hundred one million, six hundred fifteen thousand, seven hundred sixteen".