2379640397 has 4 divisors (see below), whose sum is σ = 2380253376. Its totient is φ = 2379027420.

The previous prime is 2379640343. The next prime is 2379640411. The reversal of 2379640397 is 7930469732.

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.

It is a cyclic number.

It is not a de Polignac number, because 2379640397 - 2¹⁰ = 2379639373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2379643397) 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, 300629 + ... + 308442.

It is an arithmetic number, because the mean of its divisors is an integer number (595063344).

Almost surely, 2^2379640397 is an apocalyptic number.

It is an amenable number.

2379640397 is a deficient number, since it is larger than the sum of its proper divisors (612979).

2379640397 is an equidigital number, since it uses as much as digits as its factorization.

2379640397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612978.

The product of its (nonzero) digits is 1714608, while the sum is 50.

The square root of 2379640397 is about 48781.5579599504. The cubic root of 2379640397 is about 1335.0692024146.

The spelling of 2379640397 in words is "two billion, three hundred seventy-nine million, six hundred forty thousand, three hundred ninety-seven".