397477306474827 has 48 divisors (see below), whose sum is σ = 563499963383040. Its totient is φ = 249166465325568.

The previous prime is 397477306474769. The next prime is 397477306474873. The reversal of 397477306474827 is 728474603774793.

It is a happy number.

It is not a de Polignac number, because 397477306474827 - 2¹⁵ = 397477306442059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397477306474877) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8148508924 + ... + 8148557702.

It is an arithmetic number, because the mean of its divisors is an integer number (11739582570480).

Almost surely, 2^{397477306474827} is an apocalyptic number.

397477306474827 is a deficient number, since it is larger than the sum of its proper divisors (166022656908213).

397477306474827 is a wasteful number, since it uses less digits than its factorization.

397477306474827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57332 (or 57315 counting only the distinct ones).

The product of its (nonzero) digits is 8364238848, while the sum is 78.

The spelling of 397477306474827 in words is "three hundred ninety-seven trillion, four hundred seventy-seven billion, three hundred six million, four hundred seventy-four thousand, eight hundred twenty-seven".