101849409 has 12 divisors (see below), whose sum is σ = 148020496. Its totient is φ = 67482072.

The previous prime is 101849401. The next prime is 101849441. The reversal of 101849409 is 904948101.

It is not a de Polignac number, because 101849409 - 2³ = 101849401 is a prime.

It is a super-2 number, since 2×101849409² = 20746604227298562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101849401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33247 + ... + 36180.

Almost surely, 2^101849409 is an apocalyptic number.

It is an amenable number.

101849409 is a deficient number, since it is larger than the sum of its proper divisors (46171087).

101849409 is a wasteful number, since it uses less digits than its factorization.

101849409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69596 (or 69593 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 101849409 is about 10092.0468191542. The cubic root of 101849409 is about 467.0028214610.

The spelling of 101849409 in words is "one hundred one million, eight hundred forty-nine thousand, four hundred nine".