7976398057 has 4 divisors (see below), whose sum is σ = 8020959120. Its totient is φ = 7931836996.

The previous prime is 7976398043. The next prime is 7976398103. The reversal of 7976398057 is 7508936797.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7508936797 = 103 ⋅72902299.

It is a cyclic number.

It is not a de Polignac number, because 7976398057 - 2¹¹ = 7976396009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7976397986 and 7976398004.

It is not an unprimeable number, because it can be changed into a prime (7976393057) 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, 22280263 + ... + 22280620.

It is an arithmetic number, because the mean of its divisors is an integer number (2005239780).

Almost surely, 2^7976398057 is an apocalyptic number.

It is an amenable number.

7976398057 is a deficient number, since it is larger than the sum of its proper divisors (44561063).

7976398057 is a wasteful number, since it uses less digits than its factorization.

7976398057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44561062.

The product of its (nonzero) digits is 20003760, while the sum is 61.

The square root of 7976398057 is about 89310.6827708757. The cubic root of 7976398057 is about 1998.0312340329.

The spelling of 7976398057 in words is "seven billion, nine hundred seventy-six million, three hundred ninety-eight thousand, fifty-seven".