401320039 has 4 divisors (see below), whose sum is σ = 402368256. Its totient is φ = 400271824.

The previous prime is 401320021. The next prime is 401320043. The reversal of 401320039 is 930023104.

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

It is a cyclic number.

It is not a de Polignac number, because 401320039 - 2¹³ = 401311847 is a prime.

It is a super-2 number, since 2×401320039² = 322115547405923042, 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 (401320069) 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, 523534 + ... + 524299.

It is an arithmetic number, because the mean of its divisors is an integer number (100592064).

Almost surely, 2^401320039 is an apocalyptic number.

401320039 is a deficient number, since it is larger than the sum of its proper divisors (1048217).

401320039 is a wasteful number, since it uses less digits than its factorization.

401320039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048216.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 401320039 is about 20032.9737932240. The cubic root of 401320039 is about 737.6159206467.

The spelling of 401320039 in words is "four hundred one million, three hundred twenty thousand, thirty-nine".