1084440387 has 8 divisors (see below), whose sum is σ = 1530974736. Its totient is φ = 680433152.

The previous prime is 1084440373. The next prime is 1084440389. The reversal of 1084440387 is 7830444801.

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

It is a cyclic number.

It is not a de Polignac number, because 1084440387 - 2¹² = 1084436291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1084440389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10631718 + ... + 10631819.

It is an arithmetic number, because the mean of its divisors is an integer number (191371842).

Almost surely, 2^1084440387 is an apocalyptic number.

1084440387 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1084440387 is a deficient number, since it is larger than the sum of its proper divisors (446534349).

1084440387 is a wasteful number, since it uses less digits than its factorization.

1084440387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21263557.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 1084440387 is about 32930.8424884636. The cubic root of 1084440387 is about 1027.3897481172.

The spelling of 1084440387 in words is "one billion, eighty-four million, four hundred forty thousand, three hundred eighty-seven".