406868797 has 4 divisors (see below), whose sum is σ = 409460476. Its totient is φ = 404277120.

The previous prime is 406868783. The next prime is 406868807. The reversal of 406868797 is 797868604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97495876 + 309372921 = 9874^2 + 17589^2 .

It is a cyclic number.

It is not a de Polignac number, because 406868797 - 2⁷ = 406868669 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 (406868747) 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, 1295604 + ... + 1295917.

It is an arithmetic number, because the mean of its divisors is an integer number (102365119).

Almost surely, 2^406868797 is an apocalyptic number.

It is an amenable number.

406868797 is a deficient number, since it is larger than the sum of its proper divisors (2591679).

406868797 is a wasteful number, since it uses less digits than its factorization.

406868797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591678.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The square root of 406868797 is about 20170.9889940974. The cubic root of 406868797 is about 740.9998640152. Note that the first 3 decimals are identical.

The spelling of 406868797 in words is "four hundred six million, eight hundred sixty-eight thousand, seven hundred ninety-seven".