249147772 has 6 divisors (see below), whose sum is σ = 436008608. Its totient is φ = 124573884.

The previous prime is 249147763. The next prime is 249147781. The reversal of 249147772 is 277741942.

It is an interprime number because it is at equal distance from previous prime (249147763) and next prime (249147781).

It is a super-2 number, since 2×249147772² = 124149224585127968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31143468 + ... + 31143475.

Almost surely, 2^249147772 is an apocalyptic number.

It is an amenable number.

249147772 is a deficient number, since it is larger than the sum of its proper divisors (186860836).

249147772 is a wasteful number, since it uses less digits than its factorization.

249147772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62286947 (or 62286945 counting only the distinct ones).

The product of its digits is 197568, while the sum is 43.

The square root of 249147772 is about 15784.4154785662. The cubic root of 249147772 is about 629.2438833424.

The spelling of 249147772 in words is "two hundred forty-nine million, one hundred forty-seven thousand, seven hundred seventy-two".