420952389 has 16 divisors (see below), whose sum is σ = 659394624. Its totient is φ = 235497600.

The previous prime is 420952381. The next prime is 420952403. The reversal of 420952389 is 983259024.

It is not a de Polignac number, because 420952389 - 2³ = 420952381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420952389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420952381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490192 + ... + 491049.

It is an arithmetic number, because the mean of its divisors is an integer number (41212164).

Almost surely, 2^420952389 is an apocalyptic number.

It is an amenable number.

420952389 is a deficient number, since it is larger than the sum of its proper divisors (238442235).

420952389 is a wasteful number, since it uses less digits than its factorization.

420952389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981268.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 420952389 is about 20517.1242868000. The cubic root of 420952389 is about 749.4528685155.

The spelling of 420952389 in words is "four hundred twenty million, nine hundred fifty-two thousand, three hundred eighty-nine".