90743989402 has 16 divisors (see below), whose sum is σ = 149804240832. Its totient is φ = 40882246720.

The previous prime is 90743989351. The next prime is 90743989409. The reversal of 90743989402 is 20498934709.

It is a super-2 number, since 2×90743989402² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90743989409) 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, 18248518 + ... + 18253489.

It is an arithmetic number, because the mean of its divisors is an integer number (9362765052).

Almost surely, 2^90743989402 is an apocalyptic number.

90743989402 is a deficient number, since it is larger than the sum of its proper divisors (59060251430).

90743989402 is a wasteful number, since it uses less digits than its factorization.

90743989402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36502133.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 90743989402 in words is "ninety billion, seven hundred forty-three million, nine hundred eighty-nine thousand, four hundred two".