90193993629 has 8 divisors (see below), whose sum is σ = 127332696960. Its totient is φ = 56592309696.

The previous prime is 90193993613. The next prime is 90193993633. The reversal of 90193993629 is 92639939109.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90193993629 - 2⁴ = 90193993613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90193993639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884254789 + ... + 884254890.

It is an arithmetic number, because the mean of its divisors is an integer number (15916587120).

Almost surely, 2^90193993629 is an apocalyptic number.

It is an amenable number.

90193993629 is a deficient number, since it is larger than the sum of its proper divisors (37138703331).

90193993629 is a wasteful number, since it uses less digits than its factorization.

90193993629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768509699.

The product of its (nonzero) digits is 6377292, while the sum is 60.

The spelling of 90193993629 in words is "ninety billion, one hundred ninety-three million, nine hundred ninety-three thousand, six hundred twenty-nine".