807120397 has 4 divisors (see below), whose sum is σ = 807590560. Its totient is φ = 806650236.

The previous prime is 807120389. The next prime is 807120401. The reversal of 807120397 is 793021708.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 807120397 - 2³ = 807120389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (807120337) 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, 232497 + ... + 235942.

It is an arithmetic number, because the mean of its divisors is an integer number (201897640).

Almost surely, 2^807120397 is an apocalyptic number.

It is an amenable number.

807120397 is a deficient number, since it is larger than the sum of its proper divisors (470163).

807120397 is a wasteful number, since it uses less digits than its factorization.

807120397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470162.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 807120397 is about 28409.8644312147. The cubic root of 807120397 is about 931.0637986832.

The spelling of 807120397 in words is "eight hundred seven million, one hundred twenty thousand, three hundred ninety-seven".