420689877 has 8 divisors (see below), whose sum is σ = 562917120. Its totient is φ = 279461280.

The previous prime is 420689869. The next prime is 420689879. The reversal of 420689877 is 778986024.

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

It is not a de Polignac number, because 420689877 - 2³ = 420689869 is a prime.

It is a super-2 number, since 2×420689877² = 353959945220550258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420689879) 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, 248677 + ... + 250362.

It is an arithmetic number, because the mean of its divisors is an integer number (70364640).

Almost surely, 2^420689877 is an apocalyptic number.

It is an amenable number.

420689877 is a deficient number, since it is larger than the sum of its proper divisors (142227243).

420689877 is a wasteful number, since it uses less digits than its factorization.

420689877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499323.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The square root of 420689877 is about 20510.7259013424. The cubic root of 420689877 is about 749.2970462361.

The spelling of 420689877 in words is "four hundred twenty million, six hundred eighty-nine thousand, eight hundred seventy-seven".