90432936719 has 4 divisors (see below), whose sum is σ = 90434909544. Its totient is φ = 90430963896.

The previous prime is 90432936677. The next prime is 90432936733. The reversal of 90432936719 is 91763923409.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90432936719 is a prime.

It is a super-2 number, since 2×90432936719² (a number of 23 digits) 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 (90432936019) 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, 915977 + ... + 1009890.

It is an arithmetic number, because the mean of its divisors is an integer number (22608727386).

Almost surely, 2^90432936719 is an apocalyptic number.

90432936719 is a deficient number, since it is larger than the sum of its proper divisors (1972825).

90432936719 is a wasteful number, since it uses less digits than its factorization.

90432936719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972824.

The product of its (nonzero) digits is 2204496, while the sum is 53.

The spelling of 90432936719 in words is "ninety billion, four hundred thirty-two million, nine hundred thirty-six thousand, seven hundred nineteen".