1401268839 has 4 divisors (see below), whose sum is σ = 1868358456. Its totient is φ = 934179224.

The previous prime is 1401268837. The next prime is 1401268871. The reversal of 1401268839 is 9388621041.

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 1401268839 - 2¹ = 1401268837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1401268839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401268837) 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, 233544804 + ... + 233544809.

It is an arithmetic number, because the mean of its divisors is an integer number (467089614).

Almost surely, 2^1401268839 is an apocalyptic number.

1401268839 is a deficient number, since it is larger than the sum of its proper divisors (467089617).

1401268839 is an equidigital number, since it uses as much as digits as its factorization.

1401268839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467089616.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 1401268839 is about 37433.5256020589. The cubic root of 1401268839 is about 1119.0268010234.

The spelling of 1401268839 in words is "one billion, four hundred one million, two hundred sixty-eight thousand, eight hundred thirty-nine".