39472949 has 2 divisors, whose sum is σ = 39472950. Its totient is φ = 39472948.

The previous prime is 39472943. The next prime is 39472967. The reversal of 39472949 is 94927493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22515025 + 16957924 = 4745^2 + 4118^2 .

It is an emirp because it is prime and its reverse (94927493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39472949 - 2¹² = 39468853 is a prime.

It is a super-2 number, since 2×39472949² = 3116227405513202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39472943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19736474 + 19736475.

It is an arithmetic number, because the mean of its divisors is an integer number (19736475).

Almost surely, 2^39472949 is an apocalyptic number.

It is an amenable number.

39472949 is a deficient number, since it is larger than the sum of its proper divisors (1).

39472949 is an equidigital number, since it uses as much as digits as its factorization.

39472949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 47.

The square root of 39472949 is about 6282.7501144005. The cubic root of 39472949 is about 340.4864691453.

The spelling of 39472949 in words is "thirty-nine million, four hundred seventy-two thousand, nine hundred forty-nine".