1401099985 has 4 divisors (see below), whose sum is σ = 1681319988. Its totient is φ = 1120879984.

The previous prime is 1401099983. The next prime is 1401099989. The reversal of 1401099985 is 5899901041.

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

It can be written as a sum of positive squares in 2 ways, for example, as 347188689 + 1053911296 = 18633^2 + 32464^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401099985 - 2¹ = 1401099983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401099983) 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, 140109994 + ... + 140110003.

It is an arithmetic number, because the mean of its divisors is an integer number (420329997).

Almost surely, 2^1401099985 is an apocalyptic number.

It is an amenable number.

1401099985 is a deficient number, since it is larger than the sum of its proper divisors (280220003).

1401099985 is an equidigital number, since it uses as much as digits as its factorization.

1401099985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280220002.

The product of its (nonzero) digits is 116640, while the sum is 46.

The square root of 1401099985 is about 37431.2701494352. The cubic root of 1401099985 is about 1118.9818513472.

The spelling of 1401099985 in words is "one billion, four hundred one million, ninety-nine thousand, nine hundred eighty-five".