240149091 has 16 divisors (see below), whose sum is σ = 394091264. Its totient is φ = 126671904.

The previous prime is 240149083. The next prime is 240149093. The reversal of 240149091 is 190941042.

It is not a de Polignac number, because 240149091 - 2³ = 240149083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240149093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439561 + ... + 440106.

It is an arithmetic number, because the mean of its divisors is an integer number (24630704).

Almost surely, 2^240149091 is an apocalyptic number.

240149091 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

240149091 is a deficient number, since it is larger than the sum of its proper divisors (153942173).

240149091 is a wasteful number, since it uses less digits than its factorization.

240149091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879690.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 240149091 is about 15496.7445290938. The cubic root of 240149091 is about 621.5751579982.

It can be divided in two parts, 240 and 149091, that added together give a triangular number (149331 = T₅₄₆).

The spelling of 240149091 in words is "two hundred forty million, one hundred forty-nine thousand, ninety-one".