1148400439 has 8 divisors (see below), whose sum is σ = 1217891808. Its totient is φ = 1079124480.

The previous prime is 1148400437. The next prime is 1148400467. The reversal of 1148400439 is 9340048411.

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 1148400439 - 2¹ = 1148400437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148400431) 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, 42802 + ... + 64255.

It is an arithmetic number, because the mean of its divisors is an integer number (152236476).

Almost surely, 2^1148400439 is an apocalyptic number.

1148400439 is a deficient number, since it is larger than the sum of its proper divisors (69491369).

1148400439 is a wasteful number, since it uses less digits than its factorization.

1148400439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107705.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1148400439 is about 33888.0574686718. The cubic root of 1148400439 is about 1047.2035760876.

The spelling of 1148400439 in words is "one billion, one hundred forty-eight million, four hundred thousand, four hundred thirty-nine".