90049202469 has 10 divisors (see below), whose sum is σ = 134517944550. Its totient is φ = 60032801592.

The previous prime is 90049202459. The next prime is 90049202483. The reversal of 90049202469 is 96420294009.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 87515388900 + 2533813569 = 295830^2 + 50337^2 .

It is not a de Polignac number, because 90049202469 - 2³² = 85754235173 is a prime.

It is a super-2 number, since 2×90049202469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90049202429) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 555859194 + ... + 555859355.

It is an arithmetic number, because the mean of its divisors is an integer number (13451794455).

Almost surely, 2^90049202469 is an apocalyptic number.

It is an amenable number.

90049202469 is a deficient number, since it is larger than the sum of its proper divisors (44468742081).

90049202469 is a wasteful number, since it uses less digits than its factorization.

90049202469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111718561 (or 1111718552 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 90049202469 in words is "ninety billion, forty-nine million, two hundred two thousand, four hundred sixty-nine".