90988742 has 8 divisors (see below), whose sum is σ = 146981856. Its totient is φ = 41994792.

The previous prime is 90988741. The next prime is 90988753. The reversal of 90988742 is 24788909.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90988741) 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, 1749758 + ... + 1749809.

It is an arithmetic number, because the mean of its divisors is an integer number (18372732).

Almost surely, 2^90988742 is an apocalyptic number.

90988742 is a deficient number, since it is larger than the sum of its proper divisors (55993114).

90988742 is a wasteful number, since it uses less digits than its factorization.

90988742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499582.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 90988742 is about 9538.8019163834. The cubic root of 90988742 is about 449.7755951088.

The spelling of 90988742 in words is "ninety million, nine hundred eighty-eight thousand, seven hundred forty-two".