7398405993 has 16 divisors (see below), whose sum is σ = 10771989696. Its totient is φ = 4479435840.

The previous prime is 7398405977. The next prime is 7398405997. The reversal of 7398405993 is 3995048937.

7398405993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7398405993 - 2⁴ = 7398405977 is a prime.

It is a super-2 number, since 2×7398405993² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7398405997) 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, 77230 + ... + 144087.

It is an arithmetic number, because the mean of its divisors is an integer number (673249356).

Almost surely, 2^7398405993 is an apocalyptic number.

It is an amenable number.

7398405993 is a deficient number, since it is larger than the sum of its proper divisors (3373583703).

7398405993 is a wasteful number, since it uses less digits than its factorization.

7398405993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222344.

The product of its (nonzero) digits is 7348320, while the sum is 57.

The square root of 7398405993 is about 86013.9871939442. The cubic root of 7398405993 is about 1948.5552298887. Note that the first 3 decimals are identical.

The spelling of 7398405993 in words is "seven billion, three hundred ninety-eight million, four hundred five thousand, nine hundred ninety-three".