401120399 has 4 divisors (see below), whose sum is σ = 403675464. Its totient is φ = 398565336.

The previous prime is 401120387. The next prime is 401120411. The reversal of 401120399 is 993021104.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (401120387) and next prime (401120411).

It is a cyclic number.

It is not a de Polignac number, because 401120399 - 2⁸ = 401120143 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 (401120309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1277297 + ... + 1277610.

It is an arithmetic number, because the mean of its divisors is an integer number (100918866).

Almost surely, 2^401120399 is an apocalyptic number.

401120399 is a deficient number, since it is larger than the sum of its proper divisors (2555065).

401120399 is a wasteful number, since it uses less digits than its factorization.

401120399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555064.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 401120399 is about 20027.9903884539. The cubic root of 401120399 is about 737.4935892960.

The spelling of 401120399 in words is "four hundred one million, one hundred twenty thousand, three hundred ninety-nine".