45439340 has 12 divisors (see below), whose sum is σ = 95422656. Its totient is φ = 18175728.

The previous prime is 45439321. The next prime is 45439343. The reversal of 45439340 is 4393454.

It is a junction number, because it is equal to n+sod(n) for n = 45439297 and 45439306.

It is not an unprimeable number, because it can be changed into a prime (45439343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135964 + ... + 1136003.

It is an arithmetic number, because the mean of its divisors is an integer number (7951888).

Almost surely, 2^45439340 is an apocalyptic number.

It is an amenable number.

45439340 is an abundant number, since it is smaller than the sum of its proper divisors (49983316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45439340 is a wasteful number, since it uses less digits than its factorization.

45439340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271976 (or 2271974 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 45439340 is about 6740.8708636199. The cubic root of 45439340 is about 356.8431284879.

The spelling of 45439340 in words is "forty-five million, four hundred thirty-nine thousand, three hundred forty".