45487394 has 4 divisors (see below), whose sum is σ = 68231094. Its totient is φ = 22743696.

The previous prime is 45487367. The next prime is 45487411. The reversal of 45487394 is 49378454.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43731769 + 1755625 = 6613^2 + 1325^2 .

It is a super-2 number, since 2×45487394² = 4138206025822472, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11371847 + ... + 11371850.

Almost surely, 2^45487394 is an apocalyptic number.

45487394 is a deficient number, since it is larger than the sum of its proper divisors (22743700).

45487394 is a wasteful number, since it uses less digits than its factorization.

45487394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22743699.

The product of its digits is 483840, while the sum is 44.

The square root of 45487394 is about 6744.4342979971. The cubic root of 45487394 is about 356.9688763416.

The spelling of 45487394 in words is "forty-five million, four hundred eighty-seven thousand, three hundred ninety-four".