2499400004 has 6 divisors (see below), whose sum is σ = 4373950014. Its totient is φ = 1249700000.

The previous prime is 2499399997. The next prime is 2499400009. The reversal of 2499400004 is 4000049942.

It can be written as a sum of positive squares in only one way, i.e., 2459961604 + 39438400 = 49598^2 + 6280^2 .

It is not an unprimeable number, because it can be changed into a prime (2499400009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312424997 + ... + 312425004.

It is an arithmetic number, because the mean of its divisors is an integer number (728991669).

Almost surely, 2^2499400004 is an apocalyptic number.

It is an amenable number.

2499400004 is a deficient number, since it is larger than the sum of its proper divisors (1874550010).

2499400004 is a wasteful number, since it uses less digits than its factorization.

2499400004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624850005 (or 624850003 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2499400004 is about 49993.9996799616. Note that the first 3 decimals coincide. The cubic root of 2499400004 is about 1357.1002236295.

Adding to 2499400004 its sum of digits (32), we get a square (2499400036 = 49994²).

Adding to 2499400004 its reverse (4000049942), we get a palindrome (6499449946).

The spelling of 2499400004 in words is "two billion, four hundred ninety-nine million, four hundred thousand, four".