45399933 has 16 divisors (see below), whose sum is σ = 68092800. Its totient is φ = 30265164.

The previous prime is 45399931. The next prime is 45399943. The reversal of 45399933 is 33999354.

It is not a de Polignac number, because 45399933 - 2¹ = 45399931 is a prime.

It is a super-2 number, since 2×45399933² = 4122307832808978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45399931) 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, 8193 + ... + 12566.

It is an arithmetic number, because the mean of its divisors is an integer number (4255800).

Almost surely, 2^45399933 is an apocalyptic number.

It is an amenable number.

45399933 is a deficient number, since it is larger than the sum of its proper divisors (22692867).

45399933 is an frugal number, since it uses more digits than its factorization.

45399933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20780 (or 20762 counting only the distinct ones).

The product of its digits is 393660, while the sum is 45.

The square root of 45399933 is about 6737.9472393304. The cubic root of 45399933 is about 356.7399419524.

The spelling of 45399933 in words is "forty-five million, three hundred ninety-nine thousand, nine hundred thirty-three".