1054678939 has 4 divisors (see below), whose sum is σ = 1055406256. Its totient is φ = 1053951624.

The previous prime is 1054678909. The next prime is 1054678951. The reversal of 1054678939 is 9398764501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9398764501 = 7 ⋅1342680643.

It is a cyclic number.

It is not a de Polignac number, because 1054678939 - 2²¹ = 1052581787 is a prime.

It is a super-2 number, since 2×1054678939² = 2224695328740331442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1054678909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361479 + ... + 364384.

It is an arithmetic number, because the mean of its divisors is an integer number (263851564).

Almost surely, 2^1054678939 is an apocalyptic number.

1054678939 is a deficient number, since it is larger than the sum of its proper divisors (727317).

1054678939 is an equidigital number, since it uses as much as digits as its factorization.

1054678939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727316.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 1054678939 is about 32475.8208364315. The cubic root of 1054678939 is about 1017.9038520670.

The spelling of 1054678939 in words is "one billion, fifty-four million, six hundred seventy-eight thousand, nine hundred thirty-nine".