401620847 has 8 divisors (see below), whose sum is σ = 414528000. Its totient is φ = 388917144.

The previous prime is 401620831. The next prime is 401620859. The reversal of 401620847 is 748026104.

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

It is not a de Polignac number, because 401620847 - 2⁴ = 401620831 is a prime.

It is a super-2 number, since 2×401620847² = 322598609489994818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401620897) 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, 46847 + ... + 54752.

It is an arithmetic number, because the mean of its divisors is an integer number (51816000).

Almost surely, 2^401620847 is an apocalyptic number.

401620847 is a deficient number, since it is larger than the sum of its proper divisors (12907153).

401620847 is a wasteful number, since it uses less digits than its factorization.

401620847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101725.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 401620847 is about 20040.4802088174. The cubic root of 401620847 is about 737.8001670791.

The spelling of 401620847 in words is "four hundred one million, six hundred twenty thousand, eight hundred forty-seven".