1049978406 has 8 divisors (see below), whose sum is σ = 2099956824. Its totient is φ = 349992800.

The previous prime is 1049978351. The next prime is 1049978407. The reversal of 1049978406 is 6048799401.

It is a sphenic number, since it is the product of 3 distinct primes.

1049978406 is an admirable number.

It is a super-2 number, since 2×1049978406² = 2204909306132601672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1049978407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87498195 + ... + 87498206.

It is an arithmetic number, because the mean of its divisors is an integer number (262494603).

Almost surely, 2^1049978406 is an apocalyptic number.

1049978406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1049978406 is a wasteful number, since it uses less digits than its factorization.

1049978406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174996406.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 1049978406 is about 32403.3702876722. The cubic root of 1049978406 is about 1016.3893891281.

The spelling of 1049978406 in words is "one billion, forty-nine million, nine hundred seventy-eight thousand, four hundred six".