7000400087 has 2 divisors, whose sum is σ = 7000400088. Its totient is φ = 7000400086.

The previous prime is 7000400053. The next prime is 7000400119. The reversal of 7000400087 is 7800040007.

It is a strong prime.

It is an emirp because it is prime and its reverse (7800040007) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7000400087 - 2²⁶ = 6933291223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7000403087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3500200043 + 3500200044.

It is an arithmetic number, because the mean of its divisors is an integer number (3500200044).

Almost surely, 2^7000400087 is an apocalyptic number.

7000400087 is a deficient number, since it is larger than the sum of its proper divisors (1).

7000400087 is an equidigital number, since it uses as much as digits as its factorization.

7000400087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 7000400087 is about 83668.3935963874. The cubic root of 7000400087 is about 1912.9676267875.

The spelling of 7000400087 in words is "seven billion, four hundred thousand, eighty-seven".