742946399 has 4 divisors (see below), whose sum is σ = 800096136. Its totient is φ = 685796664.

The previous prime is 742946387. The next prime is 742946423. The reversal of 742946399 is 993649247.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 742946399 - 2⁸ = 742946143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 742946399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742940399) 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, 28574849 + ... + 28574874.

It is an arithmetic number, because the mean of its divisors is an integer number (200024034).

Almost surely, 2^742946399 is an apocalyptic number.

742946399 is a deficient number, since it is larger than the sum of its proper divisors (57149737).

742946399 is a wasteful number, since it uses less digits than its factorization.

742946399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57149736.

The product of its digits is 2939328, while the sum is 53.

The square root of 742946399 is about 27257.0431081583. The cubic root of 742946399 is about 905.7030439475.

The spelling of 742946399 in words is "seven hundred forty-two million, nine hundred forty-six thousand, three hundred ninety-nine".