5434429721 has 12 divisors (see below), whose sum is σ = 6326339940. Its totient is φ = 4654651680.

The previous prime is 5434429687. The next prime is 5434429757. The reversal of 5434429721 is 1279244345.

It can be written as a sum of positive squares in 2 ways, for example, as 3646831321 + 1787598400 = 60389^2 + 42280^2 .

It is not a de Polignac number, because 5434429721 - 2⁶ = 5434429657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5434429621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27515 + ... + 107823.

It is an arithmetic number, because the mean of its divisors is an integer number (527194995).

Almost surely, 2^5434429721 is an apocalyptic number.

It is an amenable number.

5434429721 is a deficient number, since it is larger than the sum of its proper divisors (891910219).

5434429721 is a wasteful number, since it uses less digits than its factorization.

5434429721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81704 (or 81697 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 5434429721 is about 73718.5846377967. The cubic root of 5434429721 is about 1758.1313803310.

The spelling of 5434429721 in words is "five billion, four hundred thirty-four million, four hundred twenty-nine thousand, seven hundred twenty-one".