401293839 has 4 divisors (see below), whose sum is σ = 535058456. Its totient is φ = 267529224.

The previous prime is 401293831. The next prime is 401293847. The reversal of 401293839 is 938392104.

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 (401293831) and next prime (401293847).

It is not a de Polignac number, because 401293839 - 2³ = 401293831 is a prime.

It is a super-2 number, since 2×401293839² = 322073490438715842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401293797 and 401293806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401293831) 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, 66882304 + ... + 66882309.

It is an arithmetic number, because the mean of its divisors is an integer number (133764614).

Almost surely, 2^401293839 is an apocalyptic number.

401293839 is a deficient number, since it is larger than the sum of its proper divisors (133764617).

401293839 is a wasteful number, since it uses less digits than its factorization.

401293839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133764616.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 401293839 is about 20032.3198606652. The cubic root of 401293839 is about 737.5998686551.

The spelling of 401293839 in words is "four hundred one million, two hundred ninety-three thousand, eight hundred thirty-nine".