1401110509 has 4 divisors (see below), whose sum is σ = 1401302304. Its totient is φ = 1400918716.

The previous prime is 1401110497. The next prime is 1401110531. The reversal of 1401110509 is 9050111041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9050111041 = 17 ⋅532359473.

It is a cyclic number.

It is not a de Polignac number, because 1401110509 - 2²⁵ = 1367556077 is a prime.

It is a super-2 number, since 2×1401110509² = 3926221316860478162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1401110509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401110549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84487 + ... + 99700.

It is an arithmetic number, because the mean of its divisors is an integer number (350325576).

Almost surely, 2^1401110509 is an apocalyptic number.

It is an amenable number.

1401110509 is a deficient number, since it is larger than the sum of its proper divisors (191795).

1401110509 is an equidigital number, since it uses as much as digits as its factorization.

1401110509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191794.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 1401110509 is about 37431.4107268214. The cubic root of 1401110509 is about 1118.9846529877.

The spelling of 1401110509 in words is "one billion, four hundred one million, one hundred ten thousand, five hundred nine".