397930087489 has 9 divisors (see below), whose sum is σ = 437401855681. Its totient is φ = 361748316820.

The previous prime is 397930087469. The next prime is 397930087507. The reversal of 397930087489 is 984780039793.

The square root of 397930087489 is 630817.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 397930087489 - 2⁹ = 397930086977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397930087469) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6910314 + ... + 6967660.

Almost surely, 2^397930087489 is an apocalyptic number.

397930087489 is the 630817-th square number.

397930087489 is the 315409-th centered octagonal number.

It is an amenable number.

397930087489 is a deficient number, since it is larger than the sum of its proper divisors (39471768192).

397930087489 is an frugal number, since it uses more digits than its factorization.

397930087489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114716 (or 57358 counting only the distinct ones).

The product of its (nonzero) digits is 82301184, while the sum is 67.

The spelling of 397930087489 in words is "three hundred ninety-seven billion, nine hundred thirty million, eighty-seven thousand, four hundred eighty-nine".