526469749 has 4 divisors (see below), whose sum is σ = 566967436. Its totient is φ = 485972064.

The previous prime is 526469717. The next prime is 526469761. The reversal of 526469749 is 947964625.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 334231524 + 192238225 = 18282^2 + 13865^2 .

It is a cyclic number.

It is not a de Polignac number, because 526469749 - 2⁵ = 526469717 is a prime.

It is a super-2 number, since 2×526469749² = 554340793224246002, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 526469696 and 526469705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (526469789) 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, 20248824 + ... + 20248849.

It is an arithmetic number, because the mean of its divisors is an integer number (141741859).

Almost surely, 2^526469749 is an apocalyptic number.

It is an amenable number.

526469749 is a deficient number, since it is larger than the sum of its proper divisors (40497687).

526469749 is a wasteful number, since it uses less digits than its factorization.

526469749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40497686.

The product of its digits is 3265920, while the sum is 52.

The square root of 526469749 is about 22944.9286117870. The cubic root of 526469749 is about 807.4664264110.

The spelling of 526469749 in words is "five hundred twenty-six million, four hundred sixty-nine thousand, seven hundred forty-nine".