45439229 has 4 divisors (see below), whose sum is σ = 49570080. Its totient is φ = 41308380.

The previous prime is 45439223. The next prime is 45439243. The reversal of 45439229 is 92293454.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45439229 - 2⁴ = 45439213 is a prime.

It is a super-2 number, since 2×45439229² = 4129447064228882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45439192 and 45439201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45439223) 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, 2065409 + ... + 2065430.

It is an arithmetic number, because the mean of its divisors is an integer number (12392520).

Almost surely, 2^45439229 is an apocalyptic number.

It is an amenable number.

45439229 is a deficient number, since it is larger than the sum of its proper divisors (4130851).

45439229 is a wasteful number, since it uses less digits than its factorization.

45439229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130850.

The product of its digits is 77760, while the sum is 38.

The square root of 45439229 is about 6740.8626302573. The cubic root of 45439229 is about 356.8428379202.

The spelling of 45439229 in words is "forty-five million, four hundred thirty-nine thousand, two hundred twenty-nine".