5428999261 has 4 divisors (see below), whose sum is σ = 6204570592. Its totient is φ = 4653427932.

The previous prime is 5428999193. The next prime is 5428999267. The reversal of 5428999261 is 1629998245.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1629998245 = 5 ⋅325999649.

It is a cyclic number.

It is not a de Polignac number, because 5428999261 - 2⁹ = 5428998749 is a prime.

It is a super-2 number, since 2×5428999261² = 58948065951877092242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5428999267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387785655 + ... + 387785668.

It is an arithmetic number, because the mean of its divisors is an integer number (1551142648).

Almost surely, 2^5428999261 is an apocalyptic number.

It is an amenable number.

5428999261 is a deficient number, since it is larger than the sum of its proper divisors (775571331).

5428999261 is an equidigital number, since it uses as much as digits as its factorization.

5428999261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775571330.

The product of its digits is 2799360, while the sum is 55.

The square root of 5428999261 is about 73681.7430643440. The cubic root of 5428999261 is about 1757.5455694576.

The spelling of 5428999261 in words is "five billion, four hundred twenty-eight million, nine hundred ninety-nine thousand, two hundred sixty-one".