1045940398 has 4 divisors (see below), whose sum is σ = 1568910600. Its totient is φ = 522970198.

The previous prime is 1045940333. The next prime is 1045940407. The reversal of 1045940398 is 8930495401.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261485098 + ... + 261485101.

It is an arithmetic number, because the mean of its divisors is an integer number (392227650).

Almost surely, 2^1045940398 is an apocalyptic number.

1045940398 is a deficient number, since it is larger than the sum of its proper divisors (522970202).

1045940398 is an equidigital number, since it uses as much as digits as its factorization.

1045940398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522970201.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 1045940398 is about 32341.0018088494. The cubic root of 1045940398 is about 1015.0847714876.

The spelling of 1045940398 in words is "one billion, forty-five million, nine hundred forty thousand, three hundred ninety-eight".