897393407 has 2 divisors, whose sum is σ = 897393408. Its totient is φ = 897393406.

The previous prime is 897393379. The next prime is 897393421. The reversal of 897393407 is 704393798.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 897393407 - 2¹⁰ = 897392383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (897393437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448696703 + 448696704.

It is an arithmetic number, because the mean of its divisors is an integer number (448696704).

Almost surely, 2^897393407 is an apocalyptic number.

897393407 is a deficient number, since it is larger than the sum of its proper divisors (1).

897393407 is an equidigital number, since it uses as much as digits as its factorization.

897393407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 897393407 is about 29956.5252824823. The cubic root of 897393407 is about 964.5563952121.

The spelling of 897393407 in words is "eight hundred ninety-seven million, three hundred ninety-three thousand, four hundred seven".