397020011 has 4 divisors (see below), whose sum is σ = 401481000. Its totient is φ = 392559024.

The previous prime is 397019983. The next prime is 397020017. The reversal of 397020011 is 110020793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110020793 = 853 ⋅128981.

It is a cyclic number.

It is not a de Polignac number, because 397020011 - 2¹⁰ = 397018987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397020017) 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, 2230361 + ... + 2230538.

It is an arithmetic number, because the mean of its divisors is an integer number (100370250).

Almost surely, 2^397020011 is an apocalyptic number.

397020011 is a deficient number, since it is larger than the sum of its proper divisors (4460989).

397020011 is an equidigital number, since it uses as much as digits as its factorization.

397020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4460988.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 397020011 is about 19925.3610004938. The cubic root of 397020011 is about 734.9720081277.

The spelling of 397020011 in words is "three hundred ninety-seven million, twenty thousand, eleven".