340073397 has 28 divisors (see below), whose sum is σ = 511379724. Its totient is φ = 226048320.

The previous prime is 340073359. The next prime is 340073407. The reversal of 340073397 is 793370043.

It can be written as a sum of positive squares in 2 ways, for example, as 998001 + 339075396 = 999^2 + 18414^2 .

It is not a de Polignac number, because 340073397 - 2⁶ = 340073333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340071397) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 446497 + ... + 447257.

Almost surely, 2^340073397 is an apocalyptic number.

It is an amenable number.

340073397 is a deficient number, since it is larger than the sum of its proper divisors (171306327).

340073397 is an frugal number, since it uses more digits than its factorization.

340073397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392 (or 1377 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 36.

The square root of 340073397 is about 18441.0790627881. The cubic root of 340073397 is about 698.0034242846.

The spelling of 340073397 in words is "three hundred forty million, seventy-three thousand, three hundred ninety-seven".