1405864772 has 24 divisors (see below), whose sum is σ = 2650704000. Its totient is φ = 648569376.

The previous prime is 1405864763. The next prime is 1405864783. The reversal of 1405864772 is 2774685041.

It is a super-2 number, since 2×1405864772² = 3952911514301223968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148229 + ... + 157427.

It is an arithmetic number, because the mean of its divisors is an integer number (110446000).

Almost surely, 2^1405864772 is an apocalyptic number.

It is an amenable number.

1405864772 is a deficient number, since it is larger than the sum of its proper divisors (1244839228).

1405864772 is a wasteful number, since it uses less digits than its factorization.

1405864772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12155 (or 12153 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 44.

The square root of 1405864772 is about 37494.8632748541. The cubic root of 1405864772 is about 1120.2488743281.

The spelling of 1405864772 in words is "one billion, four hundred five million, eight hundred sixty-four thousand, seven hundred seventy-two".