101440919 has 2 divisors, whose sum is σ = 101440920. Its totient is φ = 101440918.

The previous prime is 101440901. The next prime is 101440957. The reversal of 101440919 is 919044101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101440919 - 2¹⁶ = 101375383 is a prime.

It is a super-2 number, since 2×101440919² = 20580520095129122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101440891 and 101440900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101440979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50720459 + 50720460.

It is an arithmetic number, because the mean of its divisors is an integer number (50720460).

Almost surely, 2^101440919 is an apocalyptic number.

101440919 is a deficient number, since it is larger than the sum of its proper divisors (1).

101440919 is an equidigital number, since it uses as much as digits as its factorization.

101440919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 101440919 is about 10071.7882721987. The cubic root of 101440919 is about 466.3776449026.

The spelling of 101440919 in words is "one hundred one million, four hundred forty thousand, nine hundred nineteen".