401008950217 has 4 divisors (see below), whose sum is σ = 401133451716. Its totient is φ = 400884448720.

The previous prime is 401008950191. The next prime is 401008950239. The reversal of 401008950217 is 712059800104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 344221583616 + 56787366601 = 586704^2 + 238301^2 .

It is a cyclic number.

It is not a de Polignac number, because 401008950217 - 2²³ = 401000561609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401008950317) 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, 62245918 + ... + 62252359.

It is an arithmetic number, because the mean of its divisors is an integer number (100283362929).

Almost surely, 2^401008950217 is an apocalyptic number.

It is an amenable number.

401008950217 is a deficient number, since it is larger than the sum of its proper divisors (124501499).

401008950217 is a wasteful number, since it uses less digits than its factorization.

401008950217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124501498.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 401008950217 in words is "four hundred one billion, eight million, nine hundred fifty thousand, two hundred seventeen".