428949335237 has 4 divisors (see below), whose sum is σ = 429612317856. Its totient is φ = 428286352620.

The previous prime is 428949335197. The next prime is 428949335273. The reversal of 428949335237 is 732533949824.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428949335237 - 2¹⁸ = 428949073093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428949365237) 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, 331490339 + ... + 331491632.

It is an arithmetic number, because the mean of its divisors is an integer number (107403079464).

Almost surely, 2^428949335237 is an apocalyptic number.

It is an amenable number.

428949335237 is a deficient number, since it is larger than the sum of its proper divisors (662982619).

428949335237 is an equidigital number, since it uses as much as digits as its factorization.

428949335237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662982618.

The product of its digits is 39191040, while the sum is 59.

The spelling of 428949335237 in words is "four hundred twenty-eight billion, nine hundred forty-nine million, three hundred thirty-five thousand, two hundred thirty-seven".