1051404399 has 6 divisors (see below), whose sum is σ = 1518695256. Its totient is φ = 700936260.

The previous prime is 1051404373. The next prime is 1051404413. The reversal of 1051404399 is 9934041501.

It is a happy number.

1051404399 is a `hidden beast` number, since 10 + 514 + 0 + 43 + 99 = 666.

It is not a de Polignac number, because 1051404399 - 2⁷ = 1051404271 is a prime.

It is a super-2 number, since 2×1051404399² = 2210902420473102402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051404199) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58411347 + ... + 58411364.

It is an arithmetic number, because the mean of its divisors is an integer number (253115876).

Almost surely, 2^1051404399 is an apocalyptic number.

1051404399 is a deficient number, since it is larger than the sum of its proper divisors (467290857).

1051404399 is a wasteful number, since it uses less digits than its factorization.

1051404399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116822717 (or 116822714 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 1051404399 is about 32425.3665977734. The cubic root of 1051404399 is about 1016.8493060512.

It can be divided in two parts, 1051 and 404399, that added together give a triangular number (405450 = T₉₀₀).

The spelling of 1051404399 in words is "one billion, fifty-one million, four hundred four thousand, three hundred ninety-nine".