7952399 has 16 divisors (see below), whose sum is σ = 10106880. Its totient is φ = 6086880.

The previous prime is 7952389. The next prime is 7952407. The reversal of 7952399 is 9932597.

7952399 = T₄₁₂ + T₄₁₃ + ... + T₄₈₉.

7952399 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 2820²-1.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7952399 is a prime.

7952399 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7952309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1412 + ... + 4230.

It is an arithmetic number, because the mean of its divisors is an integer number (631680).

Almost surely, 2^7952399 is an apocalyptic number.

7952399 is a deficient number, since it is larger than the sum of its proper divisors (2154481).

7952399 is a wasteful number, since it uses less digits than its factorization.

7952399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870.

The product of its digits is 153090, while the sum is 44.

The square root of 7952399 is about 2819.9998226950. Note that the first 3 decimals coincide. The cubic root of 7952399 is about 199.6025356336.

The spelling of 7952399 in words is "seven million, nine hundred fifty-two thousand, three hundred ninety-nine".