420004399 has 8 divisors (see below), whose sum is σ = 434806400. Its totient is φ = 405280800.

The previous prime is 420004393. The next prime is 420004411. The reversal of 420004399 is 993400024.

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

It is a cyclic number.

It is not a de Polignac number, because 420004399 - 2³ = 420004391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

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 420004399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420004391) 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, 8592 + ... + 30229.

It is an arithmetic number, because the mean of its divisors is an integer number (54350800).

Almost surely, 2^420004399 is an apocalyptic number.

420004399 is a deficient number, since it is larger than the sum of its proper divisors (14802001).

420004399 is a wasteful number, since it uses less digits than its factorization.

420004399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39201.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 420004399 is about 20494.0088562487. The cubic root of 420004399 is about 748.8898532802.

The spelling of 420004399 in words is "four hundred twenty million, four thousand, three hundred ninety-nine".