101749747 has 6 divisors (see below), whose sum is σ = 111840764. Its totient is φ = 92499660.

The previous prime is 101749717. The next prime is 101749757. The reversal of 101749747 is 747947101.

It is a happy number.

It is not a de Polignac number, because 101749747 - 2¹⁹ = 101225459 is a prime.

It is a super-2 number, since 2×101749747² = 20706022029128018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101749717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 420333 + ... + 420574.

Almost surely, 2^101749747 is an apocalyptic number.

101749747 is a deficient number, since it is larger than the sum of its proper divisors (10091017).

101749747 is an equidigital number, since it uses as much as digits as its factorization.

101749747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840929 (or 840918 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 40.

The square root of 101749747 is about 10087.1079601638. The cubic root of 101749747 is about 466.8504473993.

The spelling of 101749747 in words is "one hundred one million, seven hundred forty-nine thousand, seven hundred forty-seven".