90840435 has 32 divisors (see below), whose sum is σ = 175882752. Its totient is φ = 39083520.

The previous prime is 90840427. The next prime is 90840437. The reversal of 90840435 is 53404809.

It is not a de Polignac number, because 90840435 - 2³ = 90840427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90840396 and 90840405.

It is not an unprimeable number, because it can be changed into a prime (90840437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23661 + ... + 27230.

It is an arithmetic number, because the mean of its divisors is an integer number (5496336).

Almost surely, 2^90840435 is an apocalyptic number.

90840435 is a deficient number, since it is larger than the sum of its proper divisors (85042317).

90840435 is a wasteful number, since it uses less digits than its factorization.

90840435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50923.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 90840435 is about 9531.0248661936. The cubic root of 90840435 is about 449.5310918058.

The spelling of 90840435 in words is "ninety million, eight hundred forty thousand, four hundred thirty-five".