1405995240 has 64 divisors (see below), whose sum is σ = 4542451200. Its totient is φ = 346090752.

The previous prime is 1405995191. The next prime is 1405995259. The reversal of 1405995240 is 425995041.

It is a super-2 number, since 2×1405995240² = 3953645229805315200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449080 + ... + 452199.

It is an arithmetic number, because the mean of its divisors is an integer number (70975800).

Almost surely, 2^1405995240 is an apocalyptic number.

1405995240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1405995240 is an abundant number, since it is smaller than the sum of its proper divisors (3136455960).

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

1405995240 is a wasteful number, since it uses less digits than its factorization.

1405995240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901306 (or 901302 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 1405995240 is about 37496.6030461427. The cubic root of 1405995240 is about 1120.2835272838.

The spelling of 1405995240 in words is "one billion, four hundred five million, nine hundred ninety-five thousand, two hundred forty".