400730897 has 16 divisors (see below), whose sum is σ = 466944000. Its totient is φ = 336819600.

The previous prime is 400730867. The next prime is 400730917. The reversal of 400730897 is 798037004.

It is a cyclic number.

It is not a de Polignac number, because 400730897 - 2⁶ = 400730833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400730897.

It is not an unprimeable number, because it can be changed into a prime (400730807) 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, 81104 + ... + 85902.

It is an arithmetic number, because the mean of its divisors is an integer number (29184000).

Almost surely, 2^400730897 is an apocalyptic number.

It is an amenable number.

400730897 is a deficient number, since it is larger than the sum of its proper divisors (66213103).

400730897 is a wasteful number, since it uses less digits than its factorization.

400730897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5036.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 400730897 is about 20018.2640855794. The cubic root of 400730897 is about 737.2548012603.

The spelling of 400730897 in words is "four hundred million, seven hundred thirty thousand, eight hundred ninety-seven".