400680337 has 4 divisors (see below), whose sum is σ = 405752320. Its totient is φ = 395608356.

The previous prime is 400680323. The next prime is 400680383. The reversal of 400680337 is 733086004.

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 a de Polignac number, because none of the positive numbers 2^k-400680337 is a prime.

It is a super-4 number, since 4×400680337⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400680299 and 400680308.

It is not an unprimeable number, because it can be changed into a prime (400680307) 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, 2535873 + ... + 2536030.

It is an arithmetic number, because the mean of its divisors is an integer number (101438080).

Almost surely, 2^400680337 is an apocalyptic number.

It is an amenable number.

400680337 is a deficient number, since it is larger than the sum of its proper divisors (5071983).

400680337 is an equidigital number, since it uses as much as digits as its factorization.

400680337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071982.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 400680337 is about 20017.0011989808. The cubic root of 400680337 is about 737.2237936100.

The spelling of 400680337 in words is "four hundred million, six hundred eighty thousand, three hundred thirty-seven".