38402949 has 16 divisors (see below), whose sum is σ = 58387392. Its totient is φ = 22242048.

The previous prime is 38402941. The next prime is 38402957. The reversal of 38402949 is 94920483.

It is an interprime number because it is at equal distance from previous prime (38402941) and next prime (38402957).

It is not a de Polignac number, because 38402949 - 2³ = 38402941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38402941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28299 + ... + 29624.

It is an arithmetic number, because the mean of its divisors is an integer number (3649212).

Almost surely, 2^38402949 is an apocalyptic number.

38402949 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

38402949 is a deficient number, since it is larger than the sum of its proper divisors (19984443).

38402949 is a wasteful number, since it uses less digits than its factorization.

38402949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57956.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 38402949 is about 6197.0112957780. The cubic root of 38402949 is about 337.3817022987.

The spelling of 38402949 in words is "thirty-eight million, four hundred two thousand, nine hundred forty-nine".