401299999 has 4 divisors (see below), whose sum is σ = 415137960. Its totient is φ = 387462040.

The previous prime is 401299993. The next prime is 401300033. The reversal of 401299999 is 999992104.

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

It is not a de Polignac number, because 401299999 - 2¹⁷ = 401168927 is a prime.

It is a super-2 number, since 2×401299999² = 322083378394800002, which contains 22 as substring.

It is a Duffinian number.

401299999 is a modest number, since divided by 99999 gives 4012 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401299993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6918937 + ... + 6918994.

It is an arithmetic number, because the mean of its divisors is an integer number (103784490).

Almost surely, 2^401299999 is an apocalyptic number.

401299999 is a deficient number, since it is larger than the sum of its proper divisors (13837961).

401299999 is a wasteful number, since it uses less digits than its factorization.

401299999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13837960.

The product of its (nonzero) digits is 472392, while the sum is 52.

The square root of 401299999 is about 20032.4736116137. The cubic root of 401299999 is about 737.6036427740.

The spelling of 401299999 in words is "four hundred one million, two hundred ninety-nine thousand, nine hundred ninety-nine".