10391955 has 32 divisors (see below), whose sum is σ = 20006400. Its totient is φ = 4499712.

The previous prime is 10391933. The next prime is 10391977. The reversal of 10391955 is 55919301.

10391955 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10391933) and next prime (10391977).

It is not a de Polignac number, because 10391955 - 2⁵ = 10391923 is a prime.

10391955 is strictly pandigital in base 8.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 610 + ... + 4599.

It is an arithmetic number, because the mean of its divisors is an integer number (625200).

Almost surely, 2^10391955 is an apocalyptic number.

10391955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10391955 is a deficient number, since it is larger than the sum of its proper divisors (9614445).

10391955 is a wasteful number, since it uses less digits than its factorization.

10391955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5243.

The product of its (nonzero) digits is 6075, while the sum is 33.

The square root of 10391955 is about 3223.6555337070. The cubic root of 10391955 is about 218.2222784024. Note that the first 4 decimals are identical.

The spelling of 10391955 in words is "ten million, three hundred ninety-one thousand, nine hundred fifty-five".