1049979640 has 16 divisors (see below), whose sum is σ = 2362454280. Its totient is φ = 419991840.

The previous prime is 1049979629. The next prime is 1049979643. The reversal of 1049979640 is 469799401.

It is a super-2 number, since 2×1049979640² = 2204914488829059200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1049979643) 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, 13124706 + ... + 13124785.

Almost surely, 2^1049979640 is an apocalyptic number.

1049979640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1049979640 is an abundant number, since it is smaller than the sum of its proper divisors (1312474640).

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

1049979640 is a wasteful number, since it uses less digits than its factorization.

1049979640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26249502 (or 26249498 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 1049979640 is about 32403.3893288958. The cubic root of 1049979640 is about 1016.3897873026.

The spelling of 1049979640 in words is "one billion, forty-nine million, nine hundred seventy-nine thousand, six hundred forty".