397420638711 has 16 divisors (see below), whose sum is σ = 538934497920. Its totient is φ = 260427920480.

The previous prime is 397420638689. The next prime is 397420638721. The reversal of 397420638711 is 117836024793.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 397420638711 - 2⁵ = 397420638679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397420638721) 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, 1561621 + ... + 1798193.

It is an arithmetic number, because the mean of its divisors is an integer number (33683406120).

Almost surely, 2^397420638711 is an apocalyptic number.

397420638711 is a deficient number, since it is larger than the sum of its proper divisors (141513859209).

397420638711 is a wasteful number, since it uses less digits than its factorization.

397420638711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246126.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 397420638711 in words is "three hundred ninety-seven billion, four hundred twenty million, six hundred thirty-eight thousand, seven hundred eleven".