45989378 has 4 divisors (see below), whose sum is σ = 68984070. Its totient is φ = 22994688.

The previous prime is 45989371. The next prime is 45989381. The reversal of 45989378 is 87398954.

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., 27952369 + 18037009 = 5287^2 + 4247^2 .

It is not an unprimeable number, because it can be changed into a prime (45989371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11497343 + ... + 11497346.

Almost surely, 2^45989378 is an apocalyptic number.

45989378 is a deficient number, since it is larger than the sum of its proper divisors (22994692).

45989378 is a wasteful number, since it uses less digits than its factorization.

45989378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22994691.

The product of its digits is 2177280, while the sum is 53.

The square root of 45989378 is about 6781.5468736860. The cubic root of 45989378 is about 358.2772058956.

The spelling of 45989378 in words is "forty-five million, nine hundred eighty-nine thousand, three hundred seventy-eight".