420994763 has 4 divisors (see below), whose sum is σ = 481136880. Its totient is φ = 360852648.

The previous prime is 420994759. The next prime is 420994771. The reversal of 420994763 is 367499024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420994763 - 2² = 420994759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420994753) 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, 30071048 + ... + 30071061.

It is an arithmetic number, because the mean of its divisors is an integer number (120284220).

Almost surely, 2^420994763 is an apocalyptic number.

420994763 is a deficient number, since it is larger than the sum of its proper divisors (60142117).

420994763 is an equidigital number, since it uses as much as digits as its factorization.

420994763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60142116.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 420994763 is about 20518.1569104050. The cubic root of 420994763 is about 749.4780148670.

The spelling of 420994763 in words is "four hundred twenty million, nine hundred ninety-four thousand, seven hundred sixty-three".