1399044610 has 8 divisors (see below), whose sum is σ = 2518280316. Its totient is φ = 559617840.

The previous prime is 1399044587. The next prime is 1399044617. The reversal of 1399044610 is 164409931.

It can be written as a sum of positive squares in 2 ways, for example, as 1377820161 + 21224449 = 37119^2 + 4607^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1399044610.

It is not an unprimeable number, because it can be changed into a prime (1399044617) 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, 69952221 + ... + 69952240.

Almost surely, 2^1399044610 is an apocalyptic number.

1399044610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1399044610 is a deficient number, since it is larger than the sum of its proper divisors (1119235706).

1399044610 is a wasteful number, since it uses less digits than its factorization.

1399044610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139904468.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 1399044610 is about 37403.8047529927. The cubic root of 1399044610 is about 1118.4344117383.

The spelling of 1399044610 in words is "one billion, three hundred ninety-nine million, forty-four thousand, six hundred ten".