249378029 has 4 divisors (see below), whose sum is σ = 260220576. Its totient is φ = 238535484.

The previous prime is 249378011. The next prime is 249378037. The reversal of 249378029 is 920873942.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 249378029 - 2¹⁶ = 249312493 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 (249378079) 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, 5421239 + ... + 5421284.

It is an arithmetic number, because the mean of its divisors is an integer number (65055144).

Almost surely, 2^249378029 is an apocalyptic number.

It is an amenable number.

249378029 is a deficient number, since it is larger than the sum of its proper divisors (10842547).

249378029 is a wasteful number, since it uses less digits than its factorization.

249378029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10842546.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 249378029 is about 15791.7076024096. The cubic root of 249378029 is about 629.4376682016.

The spelling of 249378029 in words is "two hundred forty-nine million, three hundred seventy-eight thousand, twenty-nine".