401106999 has 4 divisors (see below), whose sum is σ = 534809336. Its totient is φ = 267404664.

The previous prime is 401106971. The next prime is 401107001. The reversal of 401106999 is 999601104.

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

It is not a de Polignac number, because 401106999 - 2²⁴ = 384329783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401106919) 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, 66851164 + ... + 66851169.

It is an arithmetic number, because the mean of its divisors is an integer number (133702334).

Almost surely, 2^401106999 is an apocalyptic number.

401106999 is a deficient number, since it is larger than the sum of its proper divisors (133702337).

401106999 is a wasteful number, since it uses less digits than its factorization.

401106999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133702336.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 401106999 is about 20027.6558538437. The cubic root of 401106999 is about 737.4853768622.

The spelling of 401106999 in words is "four hundred one million, one hundred six thousand, nine hundred ninety-nine".