45398902 has 4 divisors (see below), whose sum is σ = 68098356. Its totient is φ = 22699450.

The previous prime is 45398897. The next prime is 45398909. The reversal of 45398902 is 20989354.

It is a happy number.

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

It is a super-2 number, since 2×45398902² = 4122120605611208, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45398909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11349724 + ... + 11349727.

It is an arithmetic number, because the mean of its divisors is an integer number (17024589).

Almost surely, 2^45398902 is an apocalyptic number.

45398902 is a deficient number, since it is larger than the sum of its proper divisors (22699454).

45398902 is a wasteful number, since it uses less digits than its factorization.

45398902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22699453.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 45398902 is about 6737.8707319152. The cubic root of 45398902 is about 356.7372414956.

The spelling of 45398902 in words is "forty-five million, three hundred ninety-eight thousand, nine hundred two".