401487728339 has 2 divisors, whose sum is σ = 401487728340. Its totient is φ = 401487728338.

The previous prime is 401487728269. The next prime is 401487728353. The reversal of 401487728339 is 933827784104.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401487728339 - 2¹⁶ = 401487662803 is a prime.

It is a super-2 number, since 2×401487728339² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401487728039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200743864169 + 200743864170.

It is an arithmetic number, because the mean of its divisors is an integer number (200743864170).

Almost surely, 2^401487728339 is an apocalyptic number.

401487728339 is a deficient number, since it is larger than the sum of its proper divisors (1).

401487728339 is an equidigital number, since it uses as much as digits as its factorization.

401487728339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 401487728339 in words is "four hundred one billion, four hundred eighty-seven million, seven hundred twenty-eight thousand, three hundred thirty-nine".