420346397 has 8 divisors (see below), whose sum is σ = 424757952. Its totient is φ = 415944000.

The previous prime is 420346363. The next prime is 420346417. The reversal of 420346397 is 793643024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420346397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420346397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420346357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126872 + ... + 130142.

It is an arithmetic number, because the mean of its divisors is an integer number (53094744).

Almost surely, 2^420346397 is an apocalyptic number.

It is an amenable number.

420346397 is a deficient number, since it is larger than the sum of its proper divisors (4411555).

420346397 is a wasteful number, since it uses less digits than its factorization.

420346397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4579.

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 420346397 is about 20502.3510115304. The cubic root of 420346397 is about 749.0930649189.

The spelling of 420346397 in words is "four hundred twenty million, three hundred forty-six thousand, three hundred ninety-seven".