90113749 has 4 divisors (see below), whose sum is σ = 98305920. Its totient is φ = 81921580.

The previous prime is 90113689. The next prime is 90113783. The reversal of 90113749 is 94731109.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90113749 - 2²⁵ = 56559317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90116749) 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, 4096069 + ... + 4096090.

It is an arithmetic number, because the mean of its divisors is an integer number (24576480).

Almost surely, 2^90113749 is an apocalyptic number.

It is an amenable number.

90113749 is a deficient number, since it is larger than the sum of its proper divisors (8192171).

90113749 is a wasteful number, since it uses less digits than its factorization.

90113749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8192170.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 90113749 is about 9492.8261861260. The cubic root of 90113749 is about 448.3291934346.

The spelling of 90113749 in words is "ninety million, one hundred thirteen thousand, seven hundred forty-nine".